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81Published 1993Subjects: “...Combined sewer overflows United States....”
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82Published 1999Subjects: “...Water quality Standards United States....”
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83Published 1999Subjects: “...Water quality Standards United States....”
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86Published 2000Subjects: “...Metal trade Waste disposal Government policy United States....”
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87Published 2000Subjects: “...Metal trade Waste disposal Government policy United States....”
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88Published 1995Subjects: “...Feedlot runoff Government policy United States Handbooks, manuals, etc....”
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89Published 1989Subjects: “...Sewage sludge Sampling United States Handbooks, manuals, etc....”
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90Published 1998Subjects: “...Pesticides industry Environmental aspects United States Handbooks, manuals, etc....”
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91Published 1994Subjects: “...Boats and boating Waste disposal United States....”
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92Published 1995Subjects: “...Water quality biological assessment United States....”
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93Published 1997Subjects: “...Water quality biological assessment United States....”
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94Published 1997Subjects: “...Water Pollution Law and legislation United States....”
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95Published 1998Subjects: “...Water quality management United States....”
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96Published 1996Subjects: “...Water quality management United States Computer programs Handbooks, manuals, etc....”
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97Published 1999Subjects: “...Sewage disposal plants Management Study and teaching Government policy United States....”
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98Published 1997Subjects: “...Water quality Standards Study and teaching United States....”
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99Published 1997Subjects: “...Drinking water Government policy United States States....”
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100Published 1999Subjects: “...Water quality management United States Citizen participation....”
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