@book{7750,
	author = {Jáuregui, Mario A. and Sain, Gustavo E. and Centro Internacional de Mejoramiento de Maíz y Trigo.},
	title = {Continuous economic analysis of crop response to fertilizer in on farm research},
	publisher = {Centro Internacional de Mejoramiento de Maíz y Trigo,},
	year = {1992.},
	series = {Economics paper},
	address = {México, D.F. :}
}