in the same year 1965, after years of collaborative work with his romanian colleagues from the universities of bucharest and cluj, professor zicman feider published the first edition of “the vertebrate zoology”. this monumental work was reedited twice (see zoologia vertebratelor de z. feider, al. v. grossu, st. gyurko si v. pop 1967 & zoologia vertebratelor - z. feider, al. v. grossu, st. gyurko si v. pop bucurești. 1976), and can be found as pdf file on internet. https://www.scribd.com/document/334940864/252481259-zoologia-vertebratelor-feider-pdf.