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- [32] SOLVENT EXTRACTION SEPARATION OF PROTACTINIUM FROM ELEMENTS OF 4A AND 5A GROUPS ENERGIA NUCLEARE, 1966, 13 (04): : 194 - &
- [33] EXTRACTION OF NIOBIUM AND TANTALUM FLUORIDE AND CHLORIDE COMPLEXES WITH PYRAZOLONE DERIVATIVES ZAVODSKAYA LABORATORIYA, 1975, 41 (04): : 391 - 392
- [40] EXTRACTION OF NIOBIUM, TANTALUM, AND SOME ACCOMPANYING ELEMENTS BY TETRAOCTYLAMMONIUM BROMIDE FROM OXALATE SOLUTIONS JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1978, 33 (01): : 151 - 153