Young adult time travel novel where the hero is recruited by a good scientist and tempted by his evil doppelganger
38195
Boy travels through time using a calculator
83398
Novel from 50s or 60s - Good vs. Evil
67904
Young Adult book about kids being bred for genetic purity in a world where races no longer exist
90772
I am trying to find a book (young adult) where the devil is the protaganist, and other gods appear as characters
5833
Novel with a class of "Lords" with external databank-type neural implants
100510
Novel where a group of scientists in a spaceship encounter various aliens
95670
YA Fantasy romance novel about a girl whose brothers go off to war once they reach a certain age
97097
Novel with psychic parasites from Earth
6242
Older fantasy novel with bottle trap
69401
Short SciFi story where humans join and evolve into a kind of multi-creature
124530
Looking for young adult book, possible from the last 10-15 years
110527
Sci-Fi novel that involves mind backups and (small) group minds
155397
sci-fi book where a meteorite gives 3 different kinds of telepathic powers to people who then vie for control
18011
Sci-Fi short story that involved time travel and a couple who keep losing each other
28892
Time Travel Book featuring dinosaurs, cave people, and children
67824
Book about a boy who travels to a parallel universe to get a book
80531
Story about plagiarism by means of time machine