Schafer, W., & Oertel,Irmgard Graig,G Y. (1972). Ecology and palaecoecology of marine environments. Oliver&Boyd.
Chicago Edition CitationSchafer, Wilhelm, and Oertel,Irmgard Graig,G Y. Ecology and Palaecoecology of Marine Environments. Edinburgh: Oliver&Boyd, 1972.
Deismireacht MLASchafer, Wilhelm, and Oertel,Irmgard Graig,G Y. Ecology and Palaecoecology of Marine Environments. Oliver&Boyd, 1972.
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