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Keefer, Robert F. (Robert Ferris), 1930-
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Potassium fertilizers > West Virginia
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Potassium fertilization studies of alfalfa in West Virginia in relation to yield and longevity of alfalfa stands (1955-1970)
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Keefer, Robert F. (Robert Ferris), 1930-
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[Morgantown] : West Virginia University Agricultural Experiment Station, 1973.
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v.621(1973)
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