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1by Dittmar, Stefan H., Ellsworth, Peter C., Hartman, Philip MacD, Martin, Edward C., McCloskey, William B., Olsen, Mary W., Roth, Robert L., Silvertooth, Jeffrey C., Tronstad, Russell E.“... Specialists in agronomy, entomology, irrigation management, weed sciences, and plant pathology following...”
Published 1999
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