Abstracts of papers presented 

 - Amsterdam :  Excepta Medica Foundation,  1968 
 - 43p. ;  25 cm. 
 - International Congress series ;  no.170 .
<br/><br/> Includes index 
<br/><br/><label>LCCN: </label>71-359704 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fetus--Congresses--Abstracts<br/>Placental--Congresses--Abstracts