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- [3] OBSERVATIONS ON THE RARE EARTHS - DOUBLE SODIUM SULFATE PRECIPITATION FOR SEPARATION OF THE TERBIUM AND YTTRIUM EARTHS INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1945, 17 (01): : 44 - 45
- [6] PROBLEMATICS OF QUANTITATIVE PRECIPITATION OF RARE-EARTHS AS OXALATES ZEITSCHRIFT FUR CHEMIE, 1976, 16 (10): : 410 - 411