- Series: Utopia-Sonderband Series Record # 48354
- Sub-series of: Utopia-Sonderband / Science Fiction-Magazin
- Webpages: German National Library
- 1 Utopia-Sonderband
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- Utopia-Sonderband - 1955 (1955) [ED] by Clark Darlton [only as by Walter Ernsting]
- Utopia-Sonderband - 1956 (1956) [ED] by Clark Darlton [only as by Walter Ernsting]