The Alien Worlds

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Overview:

Title: The Alien Worlds
Author: Ben Bova
Year: 1964
Type: Essays

Editions/Publications:

Unknown. Amazing Stories, September 1964 (Unknown, Ben Bova, Ziff-Davis Publishing Company, $0.50, 132 pages, digest, MAGAZINE)
Unknown. Thrilling Science Fiction, June 1974 (Unknown, Ben Bova, Ultimate Publishing Co., Inc., $0.60, 134 pages, digest, MAGAZINE)