Cherven. Frank <br/><br/>
Utrasonnd in obstetrics and genecology 
Frank A Chervenack 
 -  Little ,Brown and company  1993 
 - 882 
<br/><br/><label>ISBN: </label>0316140910 
<br/><br/><label>Subjects--Personal Names: </label>--Utrasonnd in obstetrics and genecology
<br/><br/><label>Dewey Class. No.: </label>618.207  / c 523