World Health Organization  <br/><br/>
WHO expert committee on smallpox eradication  second report 

 - 
 - Geneva  WHO  1972 
 - 63p.  26cm. 
 - Technical report services noi;493   .
<br/><br/>  
<br/><br/>  Smmallpox Eradication 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Smmallpox Eradication
<br/><br/><label>Dewey Class. No.: </label>SERIALS  / WHO