01598nam a2200325Ma 4500102600195MiAaHDL20190627000000.0m d cr bn ---auaua920306s1991 iaua b s000 0 eng dsdr-uiuc6250443(OCoLC)233083437NUINUIn-us-iaUIUU17 G345 9:22iadocsA 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 /prepared by G.R. Hallberg ... [et al.].Iowa City, Iowa :Iowa Dept. of Natural Resources, Energy and Geological Resources Division, Geological Survey Bureau[1991]29 p. :ill. ;28 cm.Technical information series ;no. 22."December 1991."Includes bibliographical references (p. 27-29).Mode of access: Internet.Nitrogen fertilizersEconomic aspectsIowa.Nitrogen fertilizersEnvironmental aspectsIowa.Hallberg, George R.Big Spring Basin Demonstration Project.Model Farms Demonstration Project.Integrated Farm Management Demonstration Project (Iowa)Iowa.Dept. of Natural Resources.Geological Survey Bureau.Nitrogen management in Iowa.10260019520100707160935.020190627000000.020190627093023.02024-07-13T17:54:59Z2024-07-13T17:30:02ZSDR-UIUCUNKNOWNprepare.pl-004-008BKsdr-uiuc6250443uiugSDRUIUCuiug.30112026666302UIUv.22(1991)6250443UIUUIUC20240713googleuiug.30112026666302v.22(1991)1991icbibUS bib date1 >= 1931