Series read back in late 1900s: aliens with two life stages, one electronic
18991
Book about attack by aliens that decimate entire human fleet and take a single prisoner
86958
Trilogy: Alien-insects invade earth and are resisted by cyborgs
2832
Book series with college students finding a way to open portals to other planets
15303
novel identification: alien scientists must save their civilization from future destruction
56769
Series about proxy space battles via implanted computers in kids
16594
Earth occupation/invasion book I read in the 90s
2463
Story ID - Humans of various epochs are transported to a world
50339
Book identification: technologically-enhanced man (1970s/80s YA)
70546
Children's sci-fi book with an alien named Yacob looking for a kid with technology
101398
Book about two alien castes, alien hand modification
24884
Story ident : Solar powered aliens
85446
Story where the main character learns to perceive time out of order from the aliens
94160
Searching for a sci fi story from the 50's or 60's, of snail like creatures on another planet spend their lives eating
126178
Looking for the novel where a man could telepathically interact with electronic devices
102347
Children's SF book about moon folk going to live on another planet
29033
Eighties post-apocalyptic book series with teleporters
76070
Novel about people living in a virtual reality on a spaceship, only discovering this over time