Thorpe, J.F. Thorpe's dictionary of applied chemistry.Vol.10: plagioclase-sodium (Book) - 4th ed. rev. ed. and enl. - London Longmans, Green 1950 - 913 p. 24 cm. Subjects--Topical Terms: Chemistry, Technical--Dictionaries Universal Decimal Class. No.: 66(03) THO / 13423