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Petroleum bitumens. Method for determination of depth of penetrometer needle penetration
Document status: Active
Petroleum asphalt. Method for determination of softening point by ring and ball
Document status: Active
Petroleum bitumens. Method for determination of Fraas break point
Document status: Active
Petroleum bitumens. Methods for determination of bitumen adhesion to marble and sand
Document status: Active
Feldspar and quartzfeldapar raw material for glass industry. Specifications
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