BOOKQUE

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Stop Disease and Insect Damag in Tobacco Plant Beds. (Rev.1965).
University of Maryland. Extension Service , W.C. (Jr.) Harding , L.O. Weaver , O.D. Morgan
· 1950
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Recommendations For Insect Control on Commercial Vegetable Crops.(Rev.69).
University of Maryland Cooperative Extension Service , Michael Jr Tysowsky , David Shriver , W.C. Jr Harding
· 1964
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Control of Insects on Alfalfa & Red Clover. (Rev.1972).
University of Maryland. Extension Service , David Shriver , A.L. Steinhauer , W.C. (Jr.) Harding
· 1960
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Control of Insects on Alfalfa & Red Clover. (Rev.1970).
University of Maryland. Extension Service , David Shriver , A.L. Steinhauer , W.C. (Jr.) Harding
· 1960
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Controlling Diseases and Insects of Roses
University of Maryland. Extension Service , W.C. (Jr.) Harding , L.O. Weaver
· 1953