@book{40632,
	author = {Chomnales, R.},
	title = {Estudio microscópico de productos de concentración de Mina Pirquitas -ensayo nº 3.},
	publisher = {IDGYM,},
	year = {feb, 1980.},
	series = {Informe Inédito},
	address = {Jujuy :}
}