@book{95920,
	author = {Beauverd, Berthold.},
	title = {Antes del cálculo},
	publisher = {Editorial Kapelusz},
	year = {1967.},
	series = {Colección de pedagogía práctica},
	address = {Buenos Aires},
	edition = {1a ed.},
	note = {Translation of Avant le calcul.}
}