@book{40818,
	author = {Rayces, E. C.},
	title = {Industrialización de minerales sulfurosos de zinc en Jujuy; minas y yacimientos de área.},
	publisher = {IDGYM,},
	year = {jun, 1972.},
	series = {Informe Inédito},
	address = {Jujuy :}
}