@book{7449,
	author = {WHO Expert Committee on Biological Standardization (1958 : Geneva).},
	title = {Expert Committee on Biological Standardization [meeting held in Geneva from 22 to 27 September 1958] : twelfth report.},
	publisher = {World Health Organization,},
	year = {1959.},
	series = {(WHO technical report series ; 172)},
	address = {Geneva : }
}