A Progress review of Iowa's agricultural-energy-environmental initiatives : nitrogen management in Iowa : a joint report from the Integrated Farm Management Project, the Model Farms Demonstration Project and the Big Spring Basin Demonstration Project

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245 0 2 ‡aA Progress review of Iowa's agricultural-energy-environmental initiatives : ‡bnitrogen management in Iowa : a joint report from the Integrated Farm Management Project, the Model Farms Demonstration Project and the Big Spring Basin Demonstration Project / ‡cprepared by G.R. Hallberg ... [et al.].
260 ⊔ ⊔ ‡aIowa City, Iowa : ‡bIowa Dept. of Natural Resources, Energy and Geological Resources Division, Geological Survey Bureau ‡c[1991]
300 ⊔ ⊔ ‡a29 p. : ‡bill. ; ‡c28 cm.
490 0 ⊔ ‡aTechnical information series ; ‡vno. 22.
500 ⊔ ⊔ ‡a"December 1991."
504 ⊔ ⊔ ‡aIncludes bibliographical references (p. 27-29).
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 0 ‡aNitrogen fertilizers ‡xEconomic aspects ‡zIowa.
650 ⊔ 0 ‡aNitrogen fertilizers ‡xEnvironmental aspects ‡zIowa.
700 1 ⊔ ‡aHallberg, George R.
710 2 ⊔ ‡aBig Spring Basin Demonstration Project.
710 2 ⊔ ‡aModel Farms Demonstration Project.
710 2 ⊔ ‡aIntegrated Farm Management Demonstration Project (Iowa)
710 1 ⊔ ‡aIowa. ‡bDept. of Natural Resources. ‡bGeological Survey Bureau.
740 0 ⊔ ‡aNitrogen management in Iowa.
CID ⊔ ⊔ ‡a102600195
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DAT 1 ⊔ ‡a20190627093023.0 ‡b2024-07-13T17:54:59Z
DAT 2 ⊔ ‡a2024-07-13T17:30:02Z
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