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IS: 2220-1980, . (1980). METHODS OF TEST FOR SOILS - PART- III / SEC-1 DETERMINATION OF SPECIFIC GRAVITY SECTION FREE GRAINED SOILS. DELHI: ISI.
IS: 2220-1980, . 1980. METHODS OF TEST FOR SOILS - PART- III / SEC-1 DETERMINATION OF SPECIFIC GRAVITY SECTION FREE GRAINED SOILS. DELHI: ISI.
IS: 2220-1980, . METHODS OF TEST FOR SOILS - PART- III / SEC-1 DETERMINATION OF SPECIFIC GRAVITY SECTION FREE GRAINED SOILS. DELHI: ISI. 1980.