Moore, Keith L. Before we are born : basic embryology and birth defects / Keith L. Moore ; illustrated primarily by Glen Reid - 2nd ed. - Philadelphia : W. B. Saunders, 1983 - 282 p. ; 26 cm. LCCN: 82-24009 Subjects--Topical Terms: Embryology, HumanFetus--AbnormalitiesAbnormalitiesEmbryology