Letters (Perry Rhodan #504)
From Author Wars - https://authorwars.com/books/letters-perry-rhodan-504-1916830.html
Editions/Publications:
- 1971 . Perry Rhodan, #504: Das Raumschiff des gelben Götzen (1971, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)
- 1971 . Perry Rhodan, #270: Ultimatum an Unbekannt (1971, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)