Hill, James M. Barytes and barium products in 1916. - Washington, D.C. Government Printing Office 1917 - pp. 243-254 - Mineral Resources of the United States, 1916-Part II . Impreso Ingles Subjects--Topical Terms: MINERIABARITABARIO Subjects--Index Terms: PRODUCTOS DE BARIO Dewey Class. No.: 553.6