Williams obstetrics :  study guide / 
Barbara L. Hoffman ... [et al.]. 
 - 23rd ed. 
 - New York :  McGraw-Hill Companies,  2011. 
 - xi, 340 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>9780071748605  RM264.20 9780071767422( Int ed.)  RM72.89 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Obstetrics