@book{174120,
	author = {Strobl, Walter.},
	title = {Diccionarios rioduero},
	publisher = {Ediciones Rioduero},
	year = {c1977.},
	series = {Diccionarios Rioduero},
	address = {Madrid},
	note = {Spine title: Matemática, Diccionarios Rioduero.}
}