The Gateway
Glenn G. Thater
Friday
Robert A. Heinlein
Seven Languages in Seven Weeks
Bruce A. Tate
Beck v21[MonE]
Unknown
Invasion Cycle • Book I • Invasion
J. Robert King
Invasion Cycle (1)
Invasion Cycle • Book II • Planeshift
J.Robert King
Invasion Cycle (2)
Invasion Cycle • Book III • Apocalypse
Invasion Cycle (3)