Volhard, R. Archivmaterialien zu Rüdiger Volhard, 1931-2023.
Tohutoru Kātū Chicago (17th ed.)Volhard, Rüdiger. Archivmaterialien Zu Rüdiger Volhard, 1931-2023.
Tohutoro MLA (9th ed.)Volhard, Rüdiger. Archivmaterialien Zu Rüdiger Volhard, 1931-2023.
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