Journal issue
Hemming, F.
1957. Part 14. Declaration 33: Clarification of the status under Article 25 of a name for a taxon published in the index of a work in the text of which that taxon was described only under a vernacular name. Ops. Decls. int. Comm. zool. Nomencl. 16, 21 Jun 1957: xxv-xxxviii.