TY - BOOK AU - Cunningham,F.Gary AU - Williams,J.Whitridge TI - Williams obstetrics SN - 9780071497015 (hbk.) U1 - 618.2 PY - 2010/// CY - New York, N.Y. PB - McGraw-Hill Medical KW - Obstetrics N1 - Includes bibliographical references and index ER -