- Author: George Alvara Author Record # 242581
- Language: English
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Cover Art
- Aufstand der Mutanten [German] (1975)
- Beyond the Barrier of Space (unknown)
- De kruistocht van de Baphomet [Dutch] (1977)
- Die Achtzig-Minuten-Stunde [German] (1980)
- Star Giant (1969)
- The Dark Millennium (1970)
- The Darkest Night (1972)
- The Gladiator (1976)
- The Outer Fleet (1978)
- Time Untamed (1972)
- Tod auf Widerruf [German] (1979)
- Wij willen ons lichaam terug [Dutch] (1973)