- Author: Helena Kolda Author Record # 89645
- Legal Name: Ducháček, Helena Koldová
- Birthdate: 16 November 1928
- Deathdate: 4 September 1997
- Language: English
- Webpages: nytimes.com, SFE
- Author Tags: juvenile sf (1), saturn (1), radio (1), kidnapping (1), gold (1)
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Novels
- Martin and His Friend From Outer Space (1955) with Ivo Duka