Winchell, Alexander N. Elements of optical mineralogy : an introduction to microscopic petrography : determinative tables. - 2nd ed. - New York : J.Wiley, 1946. - 231 p. : il. ; 23 cm Subjects--Topical Terms: MineralogíaMineralesTablas Index Terms--Genre/Form: Libro Universal Decimal Class. No.: 549.12