@book{6988,
	author = {Roscoe, Edwin Scott},
	title = {Project economy},
	publisher = {Richard D.Irwin Inc},
	year = {1961},
	series = {The Irwin Series in Management},
	address = {Homewood (Illinois, Estados Unidos)},
	note = {Ejemplar No.2 es Donación Dr. Álvaro Daza Roa.}
}