@book{26945,
	author = {Penna Scorza, Evaristo,},
	title = {Graphita,},
	publisher = {Tip. do Ministerio da agricultura,},
	year = {1931.},
	series = {Brazil. Sreviço geologico e mineralogico. Boletim},
	address = {Rio de Janeiro,},
	note = {At head of title: Minsterio da agricultura.}
}