Principles and practice of agricultural analysis. Volume 1 (of 3), SoilsEditorial note — PART FIFTH. ESTIMATION OF GASES HELD IN SOILS.Reading editionH. Reduced to 0° and 760 millimeters pressure mercury.◇Copy noteReturn to PART FIFTH. ESTIMATION OF GASES HELD IN SOILS.Return to PART FIFTH. ESTIMATION OF GASES HELD IN SOILS.Return to PART FIFTH. ESTIMATION OF GASES HELD IN SOILS.