Extraterrestrials-where are they?
By: edited by Michael H. Hart and Ben Zuckerman.
Contributors: Hart, Michael H.; Zuckerman, Ben, 1943-
Publisher: Bergmon Press
Published: 1981
Place of publication: New York
Language: eng
Number of pages: 182
Subjects: Life on other planets -- Congresses.; Life -- Origin -- Congresses.
Notes: Includes index and bibliographical references.