Letters (Perry Rhodan #987, 1991)
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Editions/Publications:
- 1991 . Perry Rhodan, #987: Die sanften Invasoren (1991, various, Pabel-Moewig, DM 2.20, 68 pages, digest, MAGAZINE)
- 1991 . Perry Rhodan, #743: Inferno der Dimensionen (1991, various, Pabel-Moewig, DM 2.20, 72+xii pages, digest, MAGAZINE)
- 1991 . Perry Rhodan, #483: Im Zeichen des Ganjos (1991, various, Pabel-Moewig, DM 2.20, 687 pages, digest, MAGAZINE)