@book{71541,
	author = {Duesenberry, James Stemble and Preston, Lee E.},
	title = {Cases and problems in economics},
	publisher = {Prentice-Hall},
	year = {1960},
	address = {Englewood Cliffs (Nueva Jersey, Estados Unidos)},
	note = {Donación Dr. Álvaro Daza Roa.}
}