Saberhagen, Fred, 1930-2007. Berserker : men of earth in a war against the ultimate evil / Fred Saberhagen. - New York, N.Y. : Ace Book, 1985. - 243 p. ; 18 cm. - Baen Books science fiction . "Based on a novella of the same title, c1964 by Ace Books." "A Baen book." ISBN: 0441054900 Subjects--Topical Terms: Science fiction, American. Index Terms--Genre/Form: Science fiction. LC Class. No.: PS3569.S23