Book with short stories about travel gates, and a lizard race with 12 digits
12099
Short story collection about Transporter "Doors"
154388
Sci-Fi book with 4 prison planets
123838
Book about a planet covered in very, very long necked aliens
67743
Short story, domed refuges
130610
Book recommendation : Olympiad Combinatorics book
67824
Book about a boy who travels to a parallel universe to get a book
131350
A book about travelling to hell and cutting worlds with a knife
99223
Short story in book collection about war machines and armies out of control
78200
Looking for title/author of SF novel about malevolent creatures/gods residing inside stars
53517
Trying to Remember a Book that explored evolution of Dinosaurs to intelligence and then encountering humans
81026
Short Science Fiction story, told in a series of letters
2832
Book series with college students finding a way to open portals to other planets
145141
SciFi book series about a collection of humans who get taken by a lightning quick alien race
111991
Trying to find the name of a sci fi anthology book, or just the titles of one or more stories
16955
Identify book with different races that have only one sense each but must cooperate in competition
92004
Looking for old book, SF, artificial world, different zones for different species that visitors "inhabit"
150922
Identification of a sci-fi book or book series based on the description of two alien races