@book{132820,
	author = {Rosenqvist, Terkel.},
	title = {Principles of extractive metallurgy / },
	publisher = {Mc Graw-Hill, },
	year = {1983.},
	series = {Mc Graw-Hill. Series in materials science and engineering},
	address = {New York : },
	edition = {2ª. ed.}
}