- Series: Der Innere Raum Series Record # 38835
- Der Innere Raum
- 1 Der Boden der Ozeane (1967) [ES] by Richard Koch
- 2 Unterwasser-Technik (1967) [ES] by Richard Koch
- 3 Erforschung der Schelfe (1967) [ES] by Richard Koch
- 4 Nutzung der Schelfe (1968) [ES] by Richard Koch
- 5 Die Tiefsee (1968) [ES] by Richard Koch