@book{50910,
	author = {Barkin, David. and King, Timothy,},
	title = {Desarrollo económico regional :},
	publisher = {Siglo XXI editores,},
	year = {1970.},
	series = {El mundo del hombre, economía y demografía.},
	address = {México :},
	note = {Título original: regional economic development- the river basin approach in mexico.}
}