ACE DOUBLES. THE NEMESIS FROM TERRA/COLLISION COURSE . (F-123) (PAPERBACK)

CONDITION  VERY GOOD. STAMP MARK OF FIRST PAGE OF EACH NOVEL.

A BOOK BY   LEIGH BRACKETT/ROBERT SILVERBERG
CATEGORY   SCIENCE FICTION
PUBLICATION  ACE BOOKS.  1961.  F- 123
EDITION PAPERBACK

SYNOPSIS 

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