Letters (Perry Rhodan #688)
From Author Wars - https://authorwars.com/books/letters-perry-rhodan-688-1555231.html
Editions/Publications:
- 1974 . Perry Rhodan, #688: Der Einmann-Krieg (1974, various, Pabel-Moewig, DM 1.50, 68 pages, digest, MAGAZINE)
- 1974 . Perry Rhodan, #454: Plünderer der Sterne (1974, various, Pabel-Moewig, DM 1.50, 68 pages, digest, MAGAZINE)
- 1974 . Perry Rhodan, #91: Ernst Ellerts Rückkehr (1974, various, Pabel-Moewig, DM 1.50, 68 pages, digest, MAGAZINE)