Tunnel in the Sky
Robert A. Heinlein
Heinlein's Juveniles (9)
Therian Priestess: Therian Heat, #1
Cyndi Friberg
Secret Cargo
John Day
Five Series (1)
Red as Blood
Lilja Sigurdardóttir
The Star Conquerors
Ben Bova
Orion and the Conqueror
Ben Bova - Orion (4)
Vengeance of Orion
Ben Bova - Orion (2)