notes on the grandeau method for the determination of humus in soils

jections: (I) It is difficult to obtain a complete extraction of the huinus materials with aniiiioiiia, as ordinarily carried 011, ?specially when the...
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NOTES ON T H E GRANDEAU METHOD FOR T H E DETERMINATION OF HUMUS IN SOILS. 1lV H . 4 K X Y SNYI>l