Tic-Tac-Terror
Franklin W. Dixon & Leslie Morrill
The Hardy Boys Mystery Stories (74)
A Case of Conscience
James Blish
The Shepherd's Crown
Terry Pratchett
Discworld (41)
Billions & Billions: Thoughts On Life And Death At The Brink ...
Carl Sagan
The Warlord of Mars
Edgar Rice Burroughs
John Carter of Mars (3)