Report of the River Master of the Delaware River for the period December 1, 1997 to November 30, 1998, with a section on water quality
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Open-File Report↗
Geology topics
William E. Harkness
Publications and source records attributed to William E. Harkness.
Report of the River Master of the Delaware River for the period December 1, 1991 to November 30, 1992, with a section on water quality
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Open-File Report↗
Report of the River Master of the Delaware River for the period December 1, 1989, to November 30, 1990
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Open-File Report↗
Report of the River Master of the Delaware River for the period December 1, 1986-November 30, 1987, with a section on water quality
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Open-File Report↗