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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 (archive.org)
Subjects: Aquatic pests Irrigation water
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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
By: United States. - United States.
Publication info: Washington :For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office,1994.
Contributed by: 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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