LaMarre, Francis H.2022-05-092022-05-091945http://hdl.handle.net/10919/109839[iii], 100 leavesapplication/pdfenIn CopyrightLD5655.V855 1945.L352Loam soilsThe effect of nitrate of soda, sulphate of ammonia and calcium cyanamid on the base-exchange properties of berks silt loamThesis