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Chemical Studies of Infertile Soils Derived from Rocks High in Magnesium and Generally High in Chromium and Nickel
Robinson, W. O., (1935)
A Chemical Study of Some Soils Derived from Limestone
Alexander, Lyle T., (1939)
Variations of the Colloidal Material Extracted From The Soils of the Miami, Chester, and Cecil Series
Holmen, R. S., (1930)