Barker, T. V. Systematic crystallography : an essay on crystal description, classification and identification. - London : T.Murby, 1930. - 115 p. : il. ; 24,5 cm Subjects--Topical Terms: MineralogĂaCristalografĂaSistema cristalino Index Terms--Genre/Form: Libro Universal Decimal Class. No.: 548.1.02