Directory of zoological taxonomists of the world / compiled by Richard E. and Ruth M. Blackwelder. Blackwelder, Richard E., comp. Blackwelder, Ruth M., joint comp. Zoologists Directories. Taxonomists Directories. Paleontologists Directories. QL35 .B55 590.12 BLD Carbondale, Ill., Published for the Society of Systematic Zoology by Southern Illinois University Press, 1961. 1961. 1961 Text xvii, 404 p. eng