@book{134715,
	author = {Morgenstern, Oskar},
	title = {Sobre la exactitud de las observaciones económicas},
	publisher = {Editorial Tecnos},
	year = {1970},
	series = {Biblioteca Tecnos de ciencias económicas},
	address = {Madrid},
	edition = {2. ed.},
	note = {Translation of : On the accuracy of economic observations.}
}