IS:1489-1991; Portland-pozzolana cement specification Part 1; Fly ash basic
BUREAU OF INDIAN STANDARDS
IS:1489-1991; Portland-pozzolana cement specification Part 1; Fly ash basic - NEW DELHI BIS 1991 - 7p - With Amendment No.1-1991 .
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IS:1489-1991; Portland-pozzolana cement specification Part 1; Fly ash basic - NEW DELHI BIS 1991 - 7p - With Amendment No.1-1991 .
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