Gab es einst Marsbewohner?

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Overview:

Title: Gab es einst Marsbewohner?
Author: Walter Hain
Year: 1980
Type: Essays

Editions/Publications:

Unknown. SF Perry Rhodan Magazin, 8/80 (Unknown, Walter Hain, Pabel, DM 2.80, 64+viii pages, quarto, MAGAZINE)