Evaluation of environmental health programmes : report of a WHO scientific group [meeting held in Geneva from 13 to 22 June 1972]. 

 - 64p. 
 - (WHO technical report series ; 528) .
<br/><br/><label>ISBN: </label>92-4-120528-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental health<br/>Evaluation studies