"National Water-Quality Assessment Program."Includes bibliographical references (p. 63-65).Mode of access: Internet
"National Water-Quality Assessment Study Unit"--Cover.Includes bibliographical references (p. 46-49)...
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 39-40).Mode of a...
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 51-57).Mode of a...
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 27-30).Mode of a...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 43-44).Mo...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 74-84).Mo...
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"National Water-Quality Assessment Program"Includes bibliographical references (p. 86-91).Mode of ac...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 51-53)Mode of ac...
"National Water-Quality Assessment Study Unit"--Cover.Includes bibliographical references (p. 46-49)...
Shipping list no.: 2000-0315-P."National Water-Quality Assessment Program"--Cover.Includes bibliogra...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 39-40).Mode of a...
Shipping list no.: 2004-0190-P."NAWQA"--P. [4] of cover.Includes bibliographical references (p. 23-2...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 51-57).Mode of a...
Shipping list no.: 2002-0001-P.Includes bibliographical references (p. 23-24).Mode of access: Intern...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 27-30).Mode of a...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 43-44).Mo...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 74-84).Mo...
"Open-file report (Basic data)."Chiefly statistics.Bibliography: p. 9.Mode of access: Internet
Shipping list no.: 99-0192-P."National Water-Quality Assessment Program."Includes bibliographical re...
Shipping list no.: 2002-0281-P.Includes bibliographical references (p. 23-24).Mode of access: Intern...
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"National Water-Quality Assessment Program"Includes bibliographical references (p. 86-91).Mode of ac...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 51-53)Mode of ac...
"National Water-Quality Assessment Study Unit"--Cover.Includes bibliographical references (p. 46-49)...
Shipping list no.: 2000-0315-P."National Water-Quality Assessment Program"--Cover.Includes bibliogra...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 39-40).Mode of a...