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  1. Aquatic pests on irrigation systems : identification guide / by N. E. Otto, T. R. Bartley and J. S. Thullen ; illustrated by D. W. Cunningham and J. M. Evans.
    By: Otto, N. E. - Bartley, T. R. - Cunningham, D. W. - Evans, J. M. - Thullen, J. S.
    Edition: 2nd ed.
    Publication info: Denver :For sale by the Supt. of Docs., U.S. G.P.O. ;1980.
    Contributed by: U.S. Government Printing Office (
    Subjects: Aquatic pests  Irrigation water  
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  2. Central Valley Project Improvement Act : hearing before the Subcommittee on Water and Power Resources of the Committee on Resources, House of Representatives, One Hundred Fourth Congress, first session, on H.R. 1906, a bill to amend the Central Valley Project Improvement Act, and for other purposes, July 20, 1995--Washington, DC.
    By: United States.
    Publication info: Washington :For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office,1995.
    Contributed by: Boston Public Library (
    Subjects: California  Central Valley (Valley)  Central Valley Project (Calif.)  Conservation  Economic aspects  Fish habitat improvement  Fishes  Irrigation water  Law and legislation  Water resources development  Water-supply  
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  3. Notizie naturali e chimico-agronomiche sulla provincia di Pavia.
    Publication info: Pavia :Tipografia in ditta eredi Bizzoni,1864.
    Contributed by: University Library, University of Illinois Urbana Champaign
    Subjects: Animals  Composition  Irrigation water  Italy  Minerals  Natural history  Pavia  Quality  Water  
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