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Methods for the petrographic analysis of coals. Part 3. Method of determining maceral group composition

Document status: Active

Clock thickened oil PS-4. Specifications

Document status: Active

Coal. Determination of bulk density

Document status: Cancelled

Reagents. Ammonium phosphate tribasic 3-aqueous. Specifications

Document status: Active

Combustible natural gases. Method for determination of total and organic sulphur content

Document status: Active

Oxidized brown coals of the Far East. Classification

Document status: Replaced by GOST 14834-2014