Whittingham, T A <br/><br/>
The ultrasonic biparietal diameter, expressed in time units.  [electronic resource] 

 -  The British journal of radiology  Jun 1971 
 - 481-2 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1285 
<br/><br/><label>Standard No.: </label>10.1259/0007-1285-44-522-481  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cephalometry<br/>Female<br/>Fetus<br/>Humans<br/>Pregnancy<br/>Ultrasonics--standards