Letters (Perry Rhodan #588)
From Author Wars - https://authorwars.com/books/letters-perry-rhodan-588-2110294.html
Editions/Publications:
- 1972 . Perry Rhodan, #588: Die Ćberlebensspezialisten (1972, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)
- 1972 . Perry Rhodan, #354: Experimente mit der Zeit (1972, various, Moewig, DM 1.00, 68 pages, digest, MAGAZINE)