Direction 72 Completion and in certain Cases correction of entries relating to the names of genera of the Phyla Mollusca, Brachiopoda, Echinodermata and Chordata made on the Official List of Generic Names in Zoology by rulings given in Opinions rendered in the period up to the end of 1936
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 1E, pages 161-192
Date published:1957-09-20