@book{7337,
	author = {WHO Expert Committee on Biological Standardization (1952 : Geneva).},
	title = {Expert Committee on Biological Standardization : sixth report [of a meeting held in Geneva from 20 to 25 October 1952].},
	publisher = {world Health Organization,},
	year = {1952.},
	series = {(WHO technical report series ; 68).},
	address = {Geneva : }
}