@book{48438,
	author = {Butts, Allison,},
	title = {Metallurgical problems /},
	publisher = {McGraw-Hill Book Company Book,},
	year = {1943},
	series = {Metallurgy and metallurgical engineering series},
	address = {New York [Estados Unidos] ;},
	edition = {Second edition},
	note = {Primera edición de 1932, publicada bajo el título de: A textbook of metallurgical problems.}
}