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Electronic Theses & Dissertations
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Crop yields
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A study of some relationships among the results of soil and tissue tests, fertilizer treatments, and yields of several crops grown on organic soil
Shickluna, John C., 1923-
Text (1961)
Part of
Electronic Theses & Dissertations
Quantitative and qualitative changes in soil organic matter as related to residue additions, cropping sequence and management
Harrison, Robert Michael, 1932-
Text (1963)
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