@book{56525,
	author = {Zimperman, J. L.},
	title = {Países pobres, países ricos},
	publisher = {Siglo XXI,},
	year = {1979 (c.1966)},
	series = {Economía y demografía},
	address = {México, D.F. :},
	note = {c.2 perdida}
}