@book{40588,
	author = {Chomnales, R.},
	title = {Estudio microscópico de minerales de manganeso-Macón, dpto. Rinconada.},
	publisher = {IDGYM,},
	year = {jun, 1971.},
	series = {Informe Inédito},
	address = {Jujuy :}
}