Direction 30 Determination of the gender to be attributed to the names of fifty-seven genera of fishes, Cyclostomes, Reptiles and Amphibia placed on the Official List of Generic Names in Zoology in the period up to the end of 1936
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1955, in volume 1C, issue C.19, pages 287-298
Date published:1955-11-16