@book{58376,
	author = {Olphen, J. Van, },
	title = {Data handbook for clay materials and other non-metallic minerals},
	publisher = {Pergamon Press, },
	year = {c1979},
	address = {Oxford, England : },
	edition = {1a ed.},
	note = { "Data prepared under the auspices of the OECD and the Clay Minerals Society."}
}