共 50 条
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- [32] Development of the low-grade manganese ores of Cuba TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS, 1943, 153 : 97 - 109
- [35] The magnetic concentration of low-grade iron ores TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS, 1916, 56 : 892 - 912
- [36] Determination of tungsten in low-grade tungsten ores INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1943, 15 : 652 - 654