| Reference | {Deposit:: UNITED STATES, BUREAU OF MINES, ECONOMICS AND STATISTICS BRANCH, 1945, MINERAL RESOURCES OF SPAIN, FOREGIN MINERALS SURVEY, VOL. 2, NO. 1, P. 22.. . SPAIN, MINISTERIO DE INDUSTRIA, DIRECCION GENERAL DE MINAS, 1971, PROGRAMA NACIONAL DE EXPLOTACION MINERA-MINERIA DE MINERALES METALICOS VARIOS, VOL. 21, 1971, 300 P.. . SPAIN, MINISTERIO DE INDUSTRIA, DIRECCION GENERAL DE MINAS, 1971, PLAN NACIONAL DE LA MINERIA, EDICION RESUMIDA, VOL. II, P. 104-107.. . ROSKILL INFORMATION SERVICES LTD., 1977, THE ECONOMICS OF TUNGSTEN: THIRD EDITION, LONDON, ROSKILL INFORMATION SERVICES LTD., P. 164}{Reserve-Resource:: INTERNATIONAL STRATEGIC MINERALS INVENTORY RECORD W086} |