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  1. Aquatic pests on irrigation systems : identification guide /
    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.
    Holding Institution: U.S. Government Printing Office (archive.org)
    Subjects: Aquatic pests  Irrigation water  
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  2. The Ballast Water Control Act : hearing before the Subcommittee on Merchant Marine, Fisheries Management, and Coast Guard and Navigation of the Committee on Merchant Marine and Fisheries, House of Representatives, One Hundred Third Congress, first session, on H.R. 3360 ... October 27, 1993.
    By: United States. Committee on Merchant Marine and Fisheries. - United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Merchant Marine. - United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation. - United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries Management.
    Publication info: Washington :For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office,1994.
    Holding Institution: Boston Public Library (archive.org)
    Subjects: Aquatic pests  Discharge of ballast water  Environmental aspects  Law and legislation  Management  Marine pollution  United States  
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