Extraterrestrials : where are they ?
Hart, Michael H. , 1943-
Extraterrestrials : where are they ? edited by Michael H. Hart and Ben Zuckerman. - Pergamon Press New York 1982 c1982 - ix, 182 p. :ill. ;24 cm.
Includes bibliographies and index.
0080263429 0080263410 (pbk.)
Life on other planets -- Congresses.
Life -- Origin -- Congresses.--QB
QB54.E95 1982
Extraterrestrials : where are they ? edited by Michael H. Hart and Ben Zuckerman. - Pergamon Press New York 1982 c1982 - ix, 182 p. :ill. ;24 cm.
Includes bibliographies and index.
0080263429 0080263410 (pbk.)
Life on other planets -- Congresses.
Life -- Origin -- Congresses.--QB
QB54.E95 1982