@book{46627,
	author = {Thornthwaite, Charles Warren.},
	title = {The economic relationship of climate and agriculture},
	publisher = {Comité Permanente de la Segunda Conferencia Inteeramericana de Agricultura,},
	year = {1944},
	series = {Publicaciones, Sección 7A},
	address = {México, D.F. :}
}