Extraterrestrials-where are they?
By: edited by Michael H. Hart and Ben Zuckerman.
Contributors: Hart, Michael H.; Zuckerman, Ben, 1943-
Publisher: Pergamon Press
Published: 1982
Place of publication: New York
Language: eng
Number of pages: 182
Subjects: Life on other planets -- Congresses; Life -- Origin -- Congresses
Notes: Includes bibliographies and index.