@book{42077,
	author = {E.U.A. Department of Agriculture and Anderson, M. S.},
	title = {El encalado de los suelos ; auxiliar para el mejor cultivo},
	publisher = {Centro Regional de Ayuda Técnica,},
	year = {1966},
	series = {Farmer's bulletin},
	address = {México, D. F. :}
}