Unknown Worlds of Science Fiction #4
| Cover Credits |
| Artist: Frank Brunner |
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Comic Title: Unknown Worlds of Science Fiction #4
Publisher: Marvel
Imprint: Magazines
Cover Date: July 1975
On Sale Date:
April 29, 1975 Newsstand Date April 29, 1975
Source: Comic Reader, #117
Newsstand Date April 22, 1975
Source: House Ad, Savage Tales #11, Page 44
Copyright Date April 22, 1975
Source: Library of Congress, Periodicals 1977
Cover Price: $1.00
Page Count: 80
Editor: Roy Thomas
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