@book{8286,
	author = {WHO Expert Committee on Vector Biology and Control (1981 : Geneva). and World Health Organization},
	title = {Biological control of vectors of diseases : sixth report of the WHO Expert Committee on Vector Biology and Control [meeting held in Geneva from 1 to 7 December 1981].},
	publisher = {World Health Organization,},
	year = {1982.},
	series = {(WHO technical report series ; 679)},
	address = {Geneva : }
}