Russian standards PDF
Hard coals. Accelerated method for the determination of clinkering
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Flange unions elbows hermeticable for tube connections on external cone. Construction and dimensions
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Reduce type flange tees for tube connections on external cone. Construction and dimensions
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Ion-exchange resins. Methods of determining dynamic ion-exchange capacity
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Motor oils. Method of corrosion test for oils on engine 'Yas-204'
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