Title: The Snowball Effect Title Record # 56272
Author: Katherine MacLean
Date: 1952-09-00
Type: SHORTFICTION
Length: short story
Language: English User Rating: 7.75 (4 votes) Your vote: Not cast VOTE
Current Tags: X Minus 1 (1), first person point of view (1), contemporary (1), only humans (1), sociology (1), research (1), university administration (1), organizations (1), hard sf (1), science fiction (1) Add Tags

Other Titles

Translations
Year Language Title 1966 Italian Effetto valanga 1968 French Expérience [as by Katherine Mac Lean] 1976ⓘTranslated by Hans Kemming Dutch Het sneeuwbal effect 1981ⓘTranslated by Rainer Schmidt German Der Schneeball-Effekt 1983ⓘTranslated by Jean-Pierre Pugi French L'effet boule de neige

Publications

Displaying all variants and translations • Do not display translations • Do not display variants or translations

Title	Date	Author/Editor	Publisher/Pub. Series	ISBN/Catalog ID	Price	Pages	Format	Type	Cover Artist	Verif
Galaxy Science Fiction, September 1952	1952-09-00	ed. H. L. Gold	Galaxy Publishing Corporation		$0.35?$: US dollar	164	digest?Digest-size magazine, including both standard digest size, at about 7" by 4.5", and also large digest, such as recent issues of Asimov's, which are about 8.25" by 5.125".	mag	Jack Coggins
Galaxy Science Fiction [UK], v3 #2	1953-02-00	ed. H. L. Gold	Thorpe and Porter		1/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	164	digest?Digest-size magazine, including both standard digest size, at about 7" by 4.5", and also large digest, such as recent issues of Asimov's, which are about 8.25" by 5.125".	mag	Jack Coggins
Second Galaxy Reader of Science Fiction	1954-04-00	ed. H. L. Gold	Crown Publishers		$3.50?$: US dollar	vi+ [2]+ 504	hc?Hardcover. Used for all hardbacks of any size.	anth	Mel Hunter
Galaxy Science Fiction Omnibus	1955-00-00	ed. H. L. Gold	Grayson & Grayson		13/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	350	hc?Hardcover. Used for all hardbacks of any size.	anth	H. Johns
Penguin Science Fiction	1961-10-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Brian Keogh
Penguin Science Fiction	1961-12-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Brian Keogh
Penguin Science Fiction	1962-00-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Brian Keogh
The Diploids	1962-00-00	Katherine MacLean	Avon	G1143	$0.50?$: US dollar	192	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	coll
The Diploids	1962-00-00	Katherine MacLean	Avon	G1143	C$0.50?C$: Canadian dollar	192	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	coll
Penguin Science Fiction	1963-00-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Brian Keogh
Penguin Science Fiction	1965-00-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Oscar Dominguez
Penguin Science Fiction	1966-00-00	ed. Brian W. Aldiss	Penguin Books	1638	3/6?Prior to decimilisation (1968-1971), UK books were priced in shillings, or shillings and pence, where 20 shillings equals one pound and 12 old pence equals one shilling. Shillings were indicated with a variety of suffixes, e.g. 3s, 3', 3", 3/ all mean 3 shillings. Any number after that is additional pence, usually 6 (half a shilling) but sometimes 3 or 9 (a quarter of a shilling or three-quarters of a shilling).	236	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Oscar Dominguez
Paradosso per tredici	1966-12-00	ed. Valentino De Carlo	Edizioni dello Scorpione		Lit 0?Lit: Italian lira	324	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Ferruccio Alessandri
Science Fiction Inventions	1967-00-00	ed. Damon Knight	Lancer Books	73-691	$0.60?$: US dollar	256	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Hoot von Zitzewitz
Science Fiction Inventions	1967-00-00	ed. Damon Knight	Lancer Books	73-691	C$0.60?C$: Canadian dollar	256	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Hoot von Zitzewitz
Il pianeta Hellzapoppin	1967-06-00	ed. Valentino De Carlo	Edizioni dello Scorpione		Lit 2,500?Lit: Italian lira	340	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Ferruccio Alessandri
Le nouveau Planète, October-November 1968	1968-10-00	ed. Editors of Le nouveau Planète	Denoël?Denoel		F6.50?F: French frank	180	digest?Digest-size magazine, including both standard digest size, at about 7" by 4.5", and also large digest, such as recent issues of Asimov's, which are about 8.25" by 5.125".	mag
Il pianeta Hellzapoppin	1968-11-00	ed. Valentino De Carlo	De Carlo Editore (Italy)		Lit 1,500?Lit: Italian lira	268	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth
The Diploids	1973-00-00	Katherine MacLean	Manor Books	95-228	$0.95?$: US dollar	192	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	coll
The Penguin Science Fiction Omnibus	1973-06-00	ed. Brian Aldiss	Penguin Books	0-14-003145-6	£0.60?£: UK pound	616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	David Pelham
The Penguin Science Fiction Omnibus	1974-00-00	ed. Brian Aldiss	Penguin Books	0-14-003145-6	£0.60?£: UK pound	616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	David Pelham
Decade: The 1950s	1976-00-00	ed. Brian W. Aldiss, Harry Harrison	Macmillan UK	0-333-19001-7	£3.95?£: UK pound	219	hc?Hardcover. Used for all hardbacks of any size.	anth
Fontein science fiction	1976-00-00	ed. Brian W. Aldiss	De Fontein (Fontein SF)	90-261-0125-2		176	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Karel Thole
The Edward De Bono Science Fiction Collection	1976-00-00	ed. George Hay	The Elmfield Press	0-7057-0068-2	£4.95?£: UK pound	217	hc?Hardcover. Used for all hardbacks of any size.	anth
The Penguin Science Fiction Omnibus	1976-00-00	ed. Brian Aldiss	Penguin Books	0-14-003145-6	£1.25?£: UK pound	616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	David Pelham
Decade: the 1950s	1977-03-00	ed. Brian W. Aldiss, Harry Harrison	Pan Books	0-330-25034-5	£0.70?£: UK pound	219	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Paul Bartlett
Decade: The 1950s	1978-00-00	ed. Brian W. Aldiss, Harry Harrison	St. Martin's Press	0-312-18987-7	$3.95?$: US dollar	219	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Ken Leeder
Decade: The 1950s	1978-04-00	ed. Brian W. Aldiss, Harry Harrison	St. Martin's Press	0-312-18985-0	$8.95?$: US dollar	219	hc?Hardcover. Used for all hardbacks of any size.	anth
The Penguin Science Fiction Omnibus	1980-00-00	ed. Brian W. Aldiss	Penguin Books	0-14-003145-6	£1.95?£: UK pound	616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Tom Stimpson
The Diploids	1981-05-00	Katherine MacLean	Gregg Press	0-8398-2510-2	$13.95?$: US dollar	200	hc?Hardcover. Used for all hardbacks of any size.	coll
Kopernikus 4	1981-08-00	ed. H. J. Alpers	Moewig (Moewig Science Fiction #3539)	3-8118-3539-4	DM 5.80?DM: German (Deutsche) mark	191+ [1]	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth
Laughing Space	1982-00-00	ed. Isaac Asimov, J. O. Jeppson	Robson Books	0-86051-181-2		xvi+ 521	hc?Hardcover. Used for all hardbacks of any size.	anth	Deborah Taylor
Laughing Space	1982-00-00	ed. Isaac Asimov, J. O. Jeppson	Robson Books	0-86051-181-2	£7.95?£: UK pound	xvi+ 521	hc?Hardcover. Used for all hardbacks of any size.	anth	Deborah Taylor
Laughing Space	1982-03-00	ed. Isaac Asimov, J. O. Jeppson	Houghton Mifflin	0-395-30519-5	$17.95?$: US dollar	xvi+ 521	hc?Hardcover. Used for all hardbacks of any size.	anth
Science Fiction A to Z: A Dictionary of the Great S.F. Themes	1982-08-00	ed. Isaac Asimov, Martin H. Greenberg, Charles G. Waugh	Houghton Mifflin	0-395-31285-X	$22.95?$: US dollar	xvii+ 651	hc?Hardcover. Used for all hardbacks of any size.	anth
La femme infinie	1983-10-00	ed. Pierre K. Rey	Casterman	2-203-22637-4	FF 60	267	hc?Hardcover. Used for all hardbacks of any size.	anth	Jean-Pierre Sénamaud
Laughing Space	1985-00-00	ed. Isaac Asimov, J. O. Jeppson	Robson Books	0-86051-323-8	£3.95?£: UK pound	xvi+ 521	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Deborah Taylor
The Penguin Science Fiction Omnibus	1985-00-00	ed. Brian W. Aldiss	Penguin Books	0-14-003145-6	£3.50?£: UK pound	616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Peter Jones
The Penguin Science Fiction Omnibus	1986-00-00	ed. Brian Aldiss	Penguin Books	0-14-003145-6		616	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Peter Jones
The Great SF Stories #14 (1952)	1986-01-00	ed. Isaac Asimov, Martin H. Greenberg	DAW Books (DAW Collectors #660)	0-88677-106-4 / UE2106	$3.50?$: US dollar	352	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Tony Roberts (artist)
The Great SF Stories #14 (1952)	1986-01-00	ed. Isaac Asimov, Martin H. Greenberg	DAW Books	0-88677-106-4 / UE2106	C$3.95?C$: Canadian dollar	352	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Tony Roberts (artist)
The Ascent of Wonder: The Evolution of Hard SF	1994-07-00	ed. Kathryn Cramer, David G. Hartwell	Tor	0-312-85062-X	$35.00?$: US dollar	990+ [2]	hc?Hardcover. Used for all hardbacks of any size.	anth	Carol Russo
The Ascent of Wonder: The Evolution of Hard SF	1994-10-00	ed. Kathryn Cramer, David G. Hartwell	Orbit	1-85723-271-2	£25.00?£: UK pound	990	hc?Hardcover. Used for all hardbacks of any size.	anth	John Berkey
The Ascent of Wonder: The Evolution of Hard SF	1994-10-00	ed. Kathryn Cramer, David G. Hartwell	Tor / SFBC	05435	$17.98?$: US dollar	990	hc?Hardcover. Used for all hardbacks of any size.	anth	John Berkey
The Ascent of Wonder: The Evolution of Hard SF	1997-09-00	ed. Kathryn Cramer, David G. Hartwell	Orb	0-312-85509-5	$27.95?$: US dollar	990	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth
The Diploids	2000-03-01	Katherine MacLean	Wildside Press	1-58715-128-6	$15.00?$: US dollar	196	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	coll
A Science Fiction Omnibus	2007-11-29	ed. Brian Aldiss	Penguin Books (Penguin Modern Classics)	978-0-14-118892-8	£9.99?£: UK pound	592	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Jim Burns
A Science Fiction Omnibus	2007-11-29	ed. Brian Aldiss	Penguin Books (Penguin Modern Classics)	978-0-14-191343-8	£7.99?£: UK pound		ebook?Used for all electronic formats, including but not limited to EPUB, eReader, HTML, iBook, Mobipocket, and PDF.	anth
The Snowball Effect	2015-12-25	Katherine MacLean	Project Gutenberg	50766	$0.00?$: US dollar		ebook?Used for all electronic formats, including but not limited to EPUB, eReader, HTML, iBook, Mobipocket, and PDF.	chap
The 29th Golden Age of Science Fiction Megapack	2016-01-08	Katherine MacLean	Wildside Press	978-1-4794-0798-9	$0.99?$: US dollar		ebook?Used for all electronic formats, including but not limited to EPUB, eReader, HTML, iBook, Mobipocket, and PDF.	coll	Bruce Rolff
Science Fiction Collection	2016-01-10	Katherine MacLean	Katherine MacLean	978-1-5233-3341-7	$10.00?$: US dollar	92	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	coll	Ed Emshwiller
The Big Book of Science Fiction: The Ultimate Collection	2016-07-12	ed. Ann VanderMeer, Jeff VanderMeer	Vintage Crime / Black Lizard / Vintage Books	978-1-101-91009-2	$25.00?$: US dollar	xxxi+ 1178	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Bruce Pennington
The Big Book of Science Fiction: The Ultimate Collection	2016-07-12	ed. Ann VanderMeer, Jeff VanderMeer	Vintage Crime / Black Lizard / Vintage Books	978-1-101-91010-8	$25.00?$: US dollar		ebook?Used for all electronic formats, including but not limited to EPUB, eReader, HTML, iBook, Mobipocket, and PDF.	anth	Bruce Pennington
The Big Book of Science Fiction: The Ultimate Collection	2016-07-12	ed. Ann VanderMeer, Jeff VanderMeer	Vintage Crime/Black Lizard / SFBC	14-1016912	$19.55?$: US dollar	xxxi+ 1178	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth	Bruce Pennington
If This Goes Wrong...	2017-01-00	ed. Hank Davis	Baen Books	978-1-4767-8202-7	$7.99?$: US dollar	351	pb?Paperback. Typically 7" by 4.25" (18 cm by 11 cm) or smaller, though trimming errors can cause them to sometimes be slightly (less than 1/4 extra inch) taller or wider/deeper.	anth	Dominic Harman
Haven Speculative, September-October 2021	2021-09-00	ed. Leon Perniciaro	Haven Speculative		$0.00?$: US dollar		webzine?Used for Internet-based periodical publications which are otherwise not downloadable as an "ebook".	mag	Albert Robida
Women Wrote the Future: Vol. 1: Tales from Galaxy	2023-07-10	ed. J. LaRue	Vintage Lists		$2.22?$: US dollar		ebook?Used for all electronic formats, including but not limited to EPUB, eReader, HTML, iBook, Mobipocket, and PDF.	anth
Women Wrote the Future: Vol. 1: Tales from Galaxy	2023-07-11	ed. J. LaRue	Vintage Lists	979-8-3993-9227-1	$11.00?$: US dollar	282	tp?Trade paperback. Any softcover book which is at least 7.25" (or 19 cm) tall, or at least 4.5" (11.5 cm) wide/deep.	anth

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