@book{20543,
	author = {Mason, Brian, and Berry, L. G.},
	title = {Elements of mineralogy /},
	publisher = {W.H. Freeman,},
	year = {c1968.},
	address = {San Francisco :},
	note = {Modified and rev. version of: Mineralogy--concepts, descriptions, determinations / L.G. Berry, Brian Mason. 1959.}
}