Ecology and control of vectors in public health : twenty-first report of the WHO Expert Committee on Insecticides [meeting held in Geneva from 7 to 11 October 1974]. 

 - 35p. 
 - (WHO technical report series ; 561) .
<br/><br/><label>ISBN: </label>92-4-120561-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insect control<br/>Disease vectors<br/>Insecticides<br/>Pest control, Biological