Letters (Perry Rhodan #520)

From Author Wars - https://authorwars.com/books/letters-perry-rhodan-520-1943310.html

Overview:

Title: Letters (Perry Rhodan #520)
Author: various
Year: 1971
Type: Essays

Editions/Publications:

1971 . Perry Rhodan, #520: Unter Parazwang (1971, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)
1971 . Perry Rhodan, #286: Jagd auf die Teleporterkugel (1971, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)