Direction 59 Determination (a) of the method to be Followed in Citing for the Purposes of Zoological nomenclature the Several portions in which the Lepidotteri volume by Orenzio Gabriele Costa of the work entitled Fauna Del Regno Di Napoli Were published, and (B) of the Dates which for the foregoing Purposes are to be assigned to each of those portions
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 15, issue 16, pages 2-19
Date published:1957-03-08