@book{94218,
	author = {Deer, W. A. and Zussman, J.},
	title = {Introducción a los minerales formadores de roca},
	publisher = {UACH. Departamento de Suelos,},
	year = {[s. a.].},
	address = {Chapingo, Méx. :},
	note = {Trad. de: An introdution to the rock forming minerals}
}