by Williams, Donald R.
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Effects of coal-mine discharges on the q...
Water-resources data for Indiana County,...
Adirondacks
Modern mathematics for business decision...
Along the Adirondack Trail
Adirondack Ventures
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