TY - BOOK AU - Moore,Keith L. AU - Persaud,T.V.N. TI - Before we are born: essentials of embryology and birth defects SN - 0721673775 AV - QM601 .M757 1998 U1 - 612.6/4 21 PY - 1998/// CY - Philadelphia PB - Saunders KW - Embryology, Human KW - Abnormalities, Human KW - Embryology KW - Abnormalities N1 - Includes bibliographical references and index ER -