共 23 条
- [6] REGULARITIES OF NIOBIUM DISTRIBUTION AND VALUE OF NIOBIUM-TANTALUM RATION IN MASSIFS OF ALKALINE ROCKS GEOKHIMIYA, 1972, (01): : 64 - &
- [8] OXIDATION PROCESS OF ALLOYS OF SYSTEM NIOBIUM-TANTALUM AT 500-1050 DEGREES PHYSICS OF METALS AND METALLOGRAPHY-USSR, 1968, 25 (01): : 73 - &
- [9] Direct alkaline leaching of mechanically activated diasporic bauxite Mining, Metallurgy & Exploration, 2009, 26 : 222 - 225