Note: There are other series with the same name: Imperium (Larson)

• Series: Imperium (Keith Laumer) Series Record # 442
• Series Tags: parallel universe (6), sweden (2), science fiction (2), Rome (1), england (1), hominids (1), time travel (1), time distortion (1)

• Imperium (Keith Laumer)
  • 1 Worlds of the Imperium (1962) by Keith Laumer also appeared as:
    • Translation: Mundo alternante [Portuguese] (1969)
    • Translation: Les mondes de l'imperium [French] (1971)
    • Translation: Parte Prima (I mondi dell'impero) [Italian] (1983)
    • Serializations:
    • Worlds of the Imperium (Part 1 of 3) (1961)
    • Worlds of the Imperium (Part 2 of 3) (1961)
    • Worlds of the Imperium (Part 3 of 3) (1961)
    • Translation: I mondi dell'impero (Complete Novel) [Italian] (1964)
  • 2 The Other Side of Time (1965) by Keith Laumer also appeared as:
    • Translation: Invasion aus der Null-Zeit [German] (1973)
    • Translation: Invasie uit de dimensies [Dutch] (1974)
    • Translation: Parte Seconda (I mondi dell'impero) [Italian] (1983)
    • Serializations:
    • The Other Side of Time (Part 1 of 3) (1965)
    • The Other Side of Time (Part 2 of 3) (1965)
    • The Other Side of Time (Part 3 of 3) (1965)
  • 3 Assignment in Nowhere (1968) by Keith Laumer also appeared as:
    • Translation: De komst van de chaos [Dutch] (1974)
    • Translation: Parte Terza (I mondi dell'impero) [Italian] (1983)
  • 4 Zone Yellow (1990) by Keith Laumer
  • Worlds of the Imperium (Excerpt) (1961) [SF] by Keith Laumer
  • Beyond the Imperium (1981) [O/2N] by Keith Laumer also appeared as:
    • Translation: Invasie uit de dimensies & De komst van de chaos [Dutch] (1974) [O]
  • An excerpt from The Other Side of Time (1984) [SF] by Keith Laumer
  • Imperium (2005) [O/1-3] by Keith Laumer
  • Worlds of the Imperium (2020) [SF] by Keith Laumer