TY - BOOK AU - Moore,Keith L. AU - Persaud,T.V.N. TI - Before we are born: essentials of embryology and birth defects SN - 0721646654 (pbk.) AV - QM601 .M757 1993 U1 - 612.6/4 20 PY - 1993/// CY - Philadelphia PB - Saunders KW - Embryology, Human KW - Abnormalities KW - Embryology N1 - Includes bibliographical references and index ER -