Research into environmental pollution 

 - Geneva:  World Health Organization;  1968 
 - Varied pagination 
 - WHO technical report series 406-410 .
<br/><br/> Includes reference. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental pollution<br/>Health education<br/>Respiratory viruses<br/>Air pollution
<br/><br/><label>Dewey Class. No.: </label>363.7  / WOR