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D2797/D2797M-21a Standard Practice for Preparing Coal Samples for Microscopical Analysis by Reflected Light
D2798-21 Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal
D2799-23 Standard Test Method for Microscopical Determination of the Maceral Composition of Coal
D3997/D3997M-16 Standard Practice for Preparing Coke Samples for Microscopical Analysis by Reflected Light
D5061-19 Standard Test Method for Microscopical Determination of the Textural Components of Metallurgical Coke
D5671-20 Standard Practice for Polishing and Etching Coal Samples for Microscopical Analysis by Reflected Light
D7708-23 Standard Test Method for Microscopical Determination of the Reflectance of Vitrinite Dispersed in Sedimentary Rocks
