Riddles of Science: Mystery of the Asteroids

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Overview:

Title: Riddles of Science: Mystery of the Asteroids
Author: uncredited
Year: 1940
Type: Essays

Editions/Publications:

Unknown. Amazing Stories, June 1940 (Unknown, uncredited, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
Unknown. Science Fiction Greats, Winter 1969 (Unknown, uncredited, Ultimate Publishing Co., Inc., $0.50, 132 pages, digest, MAGAZINE)