Cain, A. J. Function and taxonomic importance, a symposium - London : The Systematics Association, 1959 - 140 p. : ilus - The Systematics Association. Publication ; 3 . - The Systematics Association. Publication ; 3 . LCCN: 70368 Subjects--Topical Terms: Zoología--Clasificación. Dewey Class. No.: 590.12 / C3