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- [29] CALCULATION OF THE PARAMETERS OF THE POOL IN THE AUTOMATIC ARC-WELDING OF THIN SHEETS OF NIOBIUM AND MOLYBDENUM ALLOYS IN HELIUM AUTOMATIC WELDING USSR, 1979, 32 (12): : 8 - 11
- [30] RESPONSE OF ETCHED NIOBIUM AND NIOBIUM ALLOYS TO POLARIZED LIGHT JOURNAL OF THE LESS-COMMON METALS, 1970, 20 (03): : 269 - +