@book{42290,
	author = {Gianfrancisco, Miguel and Congreso Geológico Argentino},
	title = {Los viscos, area mineralizada del Distrito Farallón Negro, Provincia de Catamarca Argentina.},
	publisher = {[s.n.],},
	year = {1990.},
	address = {San Juan:},
	note = {Relevamiento: 1990.}
}