@book{8137,
	author = {WHO Expert Committee on Biological Standardization (1973 : Geneva). and World Health Organization},
	title = {WHO Expert Committee on Biological Standardization [meeting held in Geneva from 24 to 30 April 1973] : twenty-fifth report.},
	publisher = {World Health Organization,},
	year = {1973.},
	series = {(WHO technical report series ; 530)},
	address = {Geneva : }
}