Direction 28 Addition to the Official List of Family-group Names in Zoology or, as the case may be, to the Official Index of Rejected and Invalid family-group names in Zoology of the family-group names Involved in the Cases dealt with in the Opinions included in volume 10 of the Opinions and Declarations rendered by the International Commission on Zoological nomenclature, other than family-group names already dealt with in those Opinions or in Directions included in that volume
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1955, in volume 10, issue 21, pages 493-510
Date published:1955-08-12