共 50 条
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- [22] REACTIONS OF SULFOCHROM AND RARE-EARTHS JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1975, 30 (10): : 1649 - 1652
- [24] ECONOMIC IMPORTANCE OF RARE-EARTHS TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION B-APPLIED EARTH SCIENCE, 1982, 91 (MAY): : B99 - B99
- [30] THE RARE-EARTHS IN DUCTILE IRON ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1980, 180 (AUG): : 13 - INDE