Williams, Donald R.
18 works on record
Works
Modern mathematics for business decision making
1974
Nutrients and organic compounds in Deer Creek and South Branch Plum Creek in southwestern Pennsylvania, April 1996 through September 1998
2001
Stream water quality in coal mined areas of the lower Cheat River Basin, West Virginia and Pennsylvania, during low-flow conditions, July 1997
1999
Water resources of Indiana County, Pennsylvania
1997
Effects of coal-mine discharges on the quality of the Stonycreek River and its tributaries, Somerset and Cambria counties, Pennsylvania
1996
Water-resources data for Indiana County, Pennsylvania
1991
Basic calculus with applications
1979
Finite mathematics with applications
1976
Modern mathematics with applications
1976
Adirondacks
Along the Adirondack Trail
Adirondack Hotels and Inns
Adirondack People and Places
Adirondack Ventures
Adirondacks 1931-1990
NICHOLAS STONER and the SAMMONS BOYS or a Tale of the Mohawk Valley
Grandfather's Tool Chest
Adirondack / Mohawk Valley Preserving Our Roots Series