@book{40606,
	author = {Chomnales, R.},
	title = {Estudio microscópico de cortes pulidos labores Mina Coiruro, dpto. Tumbaya.},
	publisher = {IDGYM,},
	year = {abr, 1976.},
	series = {Informe Inédito},
	address = {Jujuy :}
}