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"National Water-Quality Assessment Program"Includes bibliographical references (p. 135-138).Mode of ...
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Shipping list no.: 98-0330-P."Lower Susquehanna River study unit"--Cover."National Water-Quality Ass...
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"National Water-Quality Assessment Program"Includes bibliographical references (p. 135-138).Mode of ...
Shipping list no.: 2002-0046-P.Includes bibliographical references (p. 36-38).Mode of access: Intern...
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Shipping list no.: 90-340-P.Includes bibliographical references (p. 48-49).Mode of access: Internet
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Shipping list no.: 98-0330-P."Lower Susquehanna River study unit"--Cover."National Water-Quality Ass...