Obstetric ultrasound how why and when 

 - 3rd ed 
 - London  Elsevier Churchill Livingstone  2004 
 - xii,264p  ill 
<br/><br/><label>ISBN: </label>9780443054716 
<br/><br/><label>LC Class. No.: </label>MED RG527.5.U48  / C48