Research Profile Number 9 :  Summary of Progress in  Collaborative Perinatal Research ( A Nation Wide  Mother Child Study) 

 - Washington :  DHEW,  DCo., c1964. 
 - 22p. 
 - Serie: Public Health Service;  1161-9 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perinatología-Investigación.
<br/><br/><label>Dewey Class. No.: </label>PHS  / DHEW