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1	The effect of gypsum on the chemical and physical properties of a range of red brown earths / Grierson, Iain Thomas. January 1975 (has links) (PDF) Thesis (M.Ag.Sci.) -- The Dept. of Agricultural Chemistry, University of Adelaide, Northfield Research Laboratories. Soils Gypsum.
2	Some characteristics of certain semi-arid soils of southern Arizona with respect to their gypsum requirements Raslan, Abdul Hamid, 1931- January 1960 (has links) No description available. Soils -- Arizona. Soils -- Gypsum content.
3	Gypsum, A Soil Corrective and Soil Builder McGeorge, W. T. 12 1900 (has links) No description available. Agriculture -- Arizona Gypsum Soils -- Gypsum content
4	The effect of cation exchange on gypsum requirement of soils Hajrah, Hassan Hamza January 1965 (has links) No description available. Alkali lands. Soils -- Gypsum content. Cations.
5	Gypsum and Sulfur-Bearing Amendments for Arizona Soils Fuller, Wallace H., Ray, Howard E. 03 1900 (has links) This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project. Gypsum -- Arizona. Soils -- Gypsum content. Soils -- Sulfur content. Gypsum. Soils -- Gypsum content. Soils -- Sulfur content.

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