| Gaseous and liquid argon. Specifications
Аргон газообразный и жидкий. Технические условия |
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MinNR Приказ N 167 от 26.06.2012Ministry of Natural Resources and Ecology. . … |
RD 07-203-98Procedural Guidelines for Writing off Mineral … |
MinNR Приказ N 162 от 25.06.2012Ministry of Natural Resources and Ecology. . … |