by Williams, Donald R.
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Water-resources data for Indiana County,...
Adirondacks
Modern mathematics for business decision...
Along the Adirondack Trail
Adirondack Ventures
Stream water quality in coal mined areas...
Acid Mine Drainage, Rock Drainage, and A...
Acid Mine Drainage
Acid-neutralizing potential of igneous b...
Sources of coal-mine drainage and their ...
Final close-out report
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