@book{208784,
	author = {Vieweger, Hugo and Killmann, Paul},
	title = {La escuela del técnico mecánico : aritmética, álgebra, planimetría, trigonometría / Hugo Vieweger},
	publisher = {Editorial Labor},
	year = {1949},
	address = {Buenos Aires},
	edition = {2a ed. corr.}
}