Vorlage:Zych, 1931
Aus WORLDFISH WIKI
- Zych, W. 1931. Fauna ryb Dewonu I Downtonu Podola. Pteraspidomorphi: Heterostraci [The Fish Fauna of the Devonian and Downtonian of Podolia. Pteraspidomorphi: Heterostraci]. Part IA. Słowo Polskie, Lwów, 91 pp. [auf polnisch].