MCCALLA, T M <br/><br/>
RESEARCH BY THE W.H.O.  [electronic resource] 

 -  British medical journal  Sep 1964 
 - 706-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1447 
<br/><br/><label>Standard No.: </label>10.1136/bmj.2.5411.706  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans