 |
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| Правила аттестации сварщиков и специалистов сварочного производства (Bemer) | |||
| Qualification Rules for welding specialists and welders: 1 phrase in 1 subject |
| Oil processing plants | 1 |
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| |||
| Правила аттестации сварщиков и специалистов сварочного производства (Bemer) | |||
| Qualification Rules for welding specialists and welders: 1 phrase in 1 subject |
| Oil processing plants | 1 |