Der vergessene Planet

From Author Wars - https://authorwars.com/books/der-vergessene-planet-1410752.html

Overview:

Title: Der vergessene Planet
Author: Robert Silverberg Randall Garrett
Year: 1987
Type: Novels

Editions/Publications:

Unknown. Planet der Dämmerung (Unknown, Robert Silverberg, Bastei Lübbe, ISBN-10: 340422101X, DM 12.80, 392 pages, Paperback, Omnibus)
Unknown. Planet der Dämmerung (Unknown, Randall Garrett, Bastei Lübbe, ISBN-10: 340422101X, DM 12.80, 392 pages, Paperback, Omnibus)