Jurgens, J. D. (1971). The morphology of the nasal region of Amphibia and its bearing of the phylogeny of the group. [University of Stellenbosch, Zoological Institute].
Citace podle Chicago (17th ed.)Jurgens, J. D. The Morphology of the Nasal Region of Amphibia and Its Bearing of the Phylogeny of the Group. Stellenbosch: [University of Stellenbosch, Zoological Institute], 1971.
Citace podle MLA (8th ed.)Jurgens, J. D. The Morphology of the Nasal Region of Amphibia and Its Bearing of the Phylogeny of the Group. [University of Stellenbosch, Zoological Institute], 1971.
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