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|  | | Modeling Carbon and Nitrogen Dynamics for Soil Management (1st Edition)
by M.J. Shaffer (Editor), Liwang Ma (Editor), Soren Hansen (Editor)
Hardcover, 672 Pages, Published 2001 by CRC, 1st Edition
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|  | | Root Zone Quality Model: Modelling Management Effects on Water Quality & Crop Production & Computer Program
by Lajpat Ahuja, K. W. Rojas, J. D. Hanson, M. J. Shaffer, L. Ma
Paperback, 372 Pages, Published 2000 by Water Resources Pubns
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|  | | Nitrogen modeling for soil management.: An article from: Journal of Soil and Water Conservation
by M.J. Shaffer
Digital, 24 Pages, Published 2002 by Soil & Water Conservation Society
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|  | | Predicting spatial distributions of nitrate leaching in northeastern Colorado.: An article from: Journal of Soil and Water Conservation
by B.K. Wylie, M.J. Shaffer, M.K. Brodahl, D. Dubois, D.G. Wagner
Digital, 15 Pages, Published 1994 by Soil & Water Conservation Society
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|  | | New NLEAP for shallow and deep rooted rotations.(Nitrate Leaching and Economic Analysis Package): An article from: Journal of Soil and Water Conservation
by J.A. Delgado, M. Shaffer, M.K. Brodahl
Digital, 8 Pages, Published 1998 by Soil & Water Conservation Society
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|  | | NLEAP simulation of residual soil nitrate for irrigated and nonirrigated corn. (Nitrate Leaching and Economic Analysis Package): An article from: Journal of Soil and Water Conservation
by R.F. Follett, M.J. Shaffer, M.K. Brodahl, G.A. Reichman
Digital, 18 Pages, Published 1994 by Soil & Water Conservation Society
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|  | | Long-term effects of erosion and climate interactions on corn yield.: An article from: Journal of Soil and Water Conservation
by M.J. Shaffer, T.E. Schumacher, C.L. Ego
Digital, 10 Pages, Published 1994 by Soil & Water Conservation Society
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|  | | NLEAP facts about nitrogen management.(Nitrate Leaching and Economic Analysis Package): An article from: Journal of Soil and Water Conservation
by J.A. Delgado, R.F. Follett, J.L. Sharkoff, M.K. Brodahl, M.J. Shaffer
Digital, 14 Pages, Published 1998 by Soil & Water Conservation Society
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|  | | Accounting education: changing skill sets to meet modern needs.: An article from: Catalyst (Dublin, Ohio)
by Gary S. Robson, Helen M. Savage, Raymond J. Shaffer
Digital, 8 Pages, Published 2003 by Ohio Society of Certified Public Accountants
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|  | | Eport of the Board of Health of the City of Keokuk, Iowa for the Year Ending March 31, 1888.
by J. M. Shaffer
Pamphlet, Published 1888
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