The Werewolf Principle
Book format: An electronic version of a printed book that can be read on a computer or handheld device designed specifically for this purpose.
Publisher: Date:Unknown - G.P. Putnam's Sons
By: Clifford D. Simak
The cover is solid black with title in red ink, corners slightly dinged. An older Science fiction book that was first printed in the 60's. This copy has no ISBN or date of publication listed.