What has the author Donald R Williams written?

Answer 1

Donald R. Williams has written:

'Modern mathematics for business decision making' -- subject(s): Mathematics, Business, Decision making

'Nutrients and organic compounds in Deer Creek and South Branch Plum Creek in southwestern Pennsylvania, April 1996 through September 1998' -- subject(s): Environmental aspects, Environmental aspects of Pesticides, Environmental aspects of Volatile organic compounds, Nutrient pollution of water, Pesticides, Volatile organic compounds

'Stream water quality in coal mined areas of the lower Cheat River Basin, West Virginia and Pennsylvania, during low-flow conditions, July 1997' -- subject(s): Acid mine drainage, Environmental aspects, Environmental aspects of Acid mine drainage, Water quality

'Modern mathematics with applications' -- subject(s): Mathematics

Answer 2

Donald R. Williams is known for writing multiple books on the topics of urban planning, public policy, and transportation. Some of his notable works include "The American Planning Tradition: Culture and Policy" and "Rails to Trails: The Making of a Community Park".