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- [11] A SCIENTIFIC AND TECHNICAL CONFERENCE OF WELDERS AT KHARKOV WELDING PRODUCTION, 1969, 16 (05): : 98 - &
- [12] SCIENTIFIC AND TECHNICAL CONFERENCE OF URALS WELDERS AUTOMATIC WELDING USSR, 1973, 26 (06): : 77 - 78
- [13] A CONFERENCE OF WELDERS IN SIBERIA AND FAR EAST AUTOMATIC WELDING USSR, 1966, 19 (01): : 86 - &
- [14] SCIENTIFIC AND TECHNICAL CONFERENCE OF URALS WELDERS AUTOMATIC WELDING USSR, 1975, 28 (07): : 62 - 63