TY - BOOK AU - Cohen,Jack TI - Living embryos: an introduction to the study of animal development T2 - Commonwealth and international library of science, technology, engineering, and liberal studies. Zoology division U1 - 591.33 23 PY - 1963///, [reprinted 1967] CY - Oxford, New York PB - Pergamon Press, Macmillan KW - Embryology N1 - "183."; Errata slip mounted on p. 27 ER -