Search Results - Donahue, Roy L

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  1. 1
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    Soils: an introduction to soils and plant growth by Donahue, Roy L

    Published 1958
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  2. 2
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    Introducción a los suelos y al crecimiento de las plantas by Donahue, Roy L, Miller, Raymound W, Shickluna, John C

    Published 1981
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  3. 3
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    Soil and water conservation: productivity and environmental protection by Troeh, Frederick R, Hobbs, J. Arthur, Donahue, Roy L

    Published 1999
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