dspace.spu.ac.thdspace.spu.ac.th/bitstream/123456789/6954/7/บท...3.1 ASTM 049-97 Standard Test...
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dspace.spu.ac.thdspace.spu.ac.th/bitstream/123456789/6954/7/บท...3.1 ASTM 049-97 Standard Test Method for Compressive Strength of Hydraulic Cement Mortars 2) EM. 3.0 ASTM C128-97