TY - BOOK AU - Cunningham, F. Gary AU - Williams, J. Whitridge TI - Williams obstetrics SN - 9780071497015 SN - 200902902 U1 - 618.2 CUN PY - 2010/// CY - New York PB - McGraw-Hill Medical KW - Obstetrics N1 - Includes bibliographical references and index ER -