Twelve Days of Terror has 330 pages.
An Act of Terror has 834 pages.
The Rithian Terror has 111 pages.
Profiles in Terror has 392 pages.
The Terror of the Transvaal has 12 pages.
Terror by Satellite has 159 pages.
The Terror Timeline has 608 pages.
Tic-Tac-Terror has 201 pages.
Verdict of Twelve has 273 pages.
Science Fiction Terror Tales has 262 pages.
Doomsday Plus Twelve has 230 pages.
The Wind's Twelve Quarters has 303 pages.
The Twelve Little Cakes has 384 pages.