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- [4] The hydrogen-ion concentration of heavy alkaline soils JOURNAL OF AGRICULTURAL SCIENCE, 1923, 13 : 321 - 332
- [5] On the colorimetric determination of hydrogen-ion concentration in soils JOURNAL OF AGRICULTURAL SCIENCE, 1923, 13 : 69 - 73
- [6] Hydrogen-ion concentration in relation to animal and plant growth. JOURNAL OF THE FRANKLIN INSTITUTE, 1924, 197 : 741 - 756
- [9] Apparatus for measuring hydrogen-ion concentration of the soil INDUSTRIAL AND ENGINEERING CHEMISTRY, 1928, 20 (01): : 421 - 423