Template:Opinion 490

• International Commission on Zoological Nomenclature. 1957. Opinion 490. Action under the Plenary Powers to preserve for use in its accustomed sense the generic name Elaphe Fitzinger, 1833 (Class Reptilia). pp. 179–196 In Hemming, F. (ed.). Opinions and declarations rendered by the International Commission on Zoological Nomenclature Volume 17, part 12. International Trust for Zoological Nomenclature: London. 452 pp. BHL  
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Nomenclatural acts

• Date of publication: 15 November 1957