@book{7993,
	author = {WHO Scientific Group on Biological Components of Human Reproduction (1968 : Geneva). and World Health Organization},
	title = {Biological components of human reproduction : studies of their variations in population groups, report of a WHO scientific group [meeting held in Geneva from 10 to 16 December 1968].},
	publisher = {World Health Organization,},
	year = {1969.},
	series = {(WHO technical report series ; 435)},
	address = {Geneva : }
}