Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regionsNote 116 — Chapter XVIII · THE PHYSICO-CHEMICAL INVESTIGATION OF SOILS IN RELATION TO CROP PRODUCTION.Reading editionZeitschr. Landw. Vers. Oesterr., 1901.◇Copy noteReturn to CHAPTER XVIII. THE PHYSICO-CHEMICAL INVESTIGATION OF SOILS IN RELATION TO CROP PRODUCTION.