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Gypseous (>40% gypsum) and gypsiferous (1 to 40% gypsum) soils are estimated to comprise from 100million to 200millionha globally including over 1millionha in the U.S. More intensive land use on these soils has resulted in greater demand for information on distribution, properties, and behavior of these soils. Common laboratory methods for determining particle size distribution of soils involve...
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