Cummings, Michael R. Human heredity : principles and issues / Michael R. Cummings. - xxiii, 476 pages : illustrations (some color) ; 26 cm. Includes bibliographies and indexes. ISBN: 0314640320 LCCN: 87035668 Subjects--Topical Terms: Human genetics. LC Class. No.: QH431 / .C897 1988 Dewey Class. No.: 573.21