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- [27] The attack of minerals and the separation of niobium and tantalum COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1941, 212 : 614 - 616
- [30] SEPARATION OF ARSENIC FROM NIOBIUM AND TANTALUM UKRAINSKII KHIMICHESKII ZHURNAL, 1970, 36 (01): : 91 - &