@book{78514,
	author = {Singh, R. P. and Morris, Michael L.},
	title = {Adoption, management, and impact of hybrid maize seed in India},
	publisher = {Centro Internacional de Mejoramiento de Maíz y Trigo,},
	year = {1997},
	series = {Economics. Working paper},
	address = {México, D.F. :}
}