"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 20-21).Mode of access: Internet
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 16-17).Mode of a...
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 57-59).Mode of a...
Seventeen maps on 4 folded leaves in pocket."National Water-Quality Assessment Program"--Cover.Inclu...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 16-17).Mode of a...
"National Water-Quality Assessment Program"Includes bibliographical references (p. 86-91).Mode of ac...
"National Water-quality Assessment Program"--Cover.Shipping list no.: 95-0128-P.Includes bibliograph...
Shipping list no.: 98-0203-P."National Water-Quality Assessment Program"--Cover.Includes bibliograph...
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Shipping list no.: 2001-0005-P.Includes bibliographical references (p. 35-37).Mode of access: Intern...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 54-57).Mo...
"National Water-Quality Assessment Program"--P. [1] of cover.Shipping list no.: 2003-0004-P.Includes...
"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 44-46).Mo...
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"National Water-Quality Assessment Program"--Cover.Includes bibliographical references (p. 33-34).Mo...
Shipping list no.: 95-0271-P."National Water-Quality Assessment Program"--Cover.Includes bibliograph...
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"National Water-Quality Assessment Program."Includes bibliographical references (p. 57-59).Mode of a...
Seventeen maps on 4 folded leaves in pocket."National Water-Quality Assessment Program"--Cover.Inclu...
"National Water-Quality Assessment Program."Includes bibliographical references (p. 16-17).Mode of a...
"National Water-Quality Assessment Program"Includes bibliographical references (p. 86-91).Mode of ac...