00553cam a22001934a 4500020004300000020004000043082001300083100002400096245002400120250001400144260004300158300003700201650001600238650001600254654001600270700002500286700002700311700002100338  a9780071497015 (hardcover : alk. paper)  a0071497013 (hardcover : alk. paper)00a618bCUN  aCunningham, F. Gary00aWilliams obstetrics  a23rd ed.   aNew York :bMcGraw-Hill Medical,c2010  axv, 1385 p. bill. (some col.) ; 0aObstetrics.12aObstetrics.  aGynaecology1 aCunningham, F. Gary.1 aWilliams, J. Whitridge1 aLeveno,Kenneth J