IS: 2720(PART 22)-1972 Methods of test for soils part XXII Determination of organic matter
BUREAU OF INDIAN STANDARDS
IS: 2720(PART 22)-1972 Methods of test for soils part XXII Determination of organic matter - NEW DELHI BIS 1972 - 10p
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IS: 2720(PART 22)-1972 Methods of test for soils part XXII Determination of organic matter - NEW DELHI BIS 1972 - 10p
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