@book{2063,
	author = {Zatuchni, G.I. and International Workshop on Research Frontiers in Fertility Regulation (1980 : Mexico City).},
	title = {Research frontiers in fertility regulation.},
	publisher = {Harper and Row,},
	year = {1980.},
	series = {(PARFR series on fertility regulation)},
	address = {Cambridge : }
}