@book{71525,
	author = {Conference on the Teaching of Elementary Economics and Knopf, Kenyon A.},
	title = {The teaching of elementary economics},
	publisher = {Holt, Rinehart and Winston},
	year = {1960},
	address = {Nueva York (Estados Unidos)},
	note = {Donación Dr. Álvaro Daza Roa.}
}