Direction 32 Addition to the Official List of Works Approved as available for Zoological nomenclature of the titles of certain works dealt with in Opinions rendered in the period up to the end of 1936 and to the Official Index of Rejected and Invalid works in Zoological nomenclature of certain works similarly dealt with in the same period and matters incidental thereto
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1956, in volume 1C, issue C.21, pages 307-328
Date published:1956-05-17