| Author | Title | | Research Organization |
|---|
| Uchtmann, D.L. | Alternative Policies for Controlling Nonpoint Agricultural Sources of Water Pollution (04/01/1978) | | Illinois at Urbana-Champaign, University of |
| Ulen, Thomas S. | Environmental Monitoring and Enforcement: Theory and Practice, Workshop (07/14/1987) |  | Association of Environmental and Resource Economists (AERE) |
| Unger, Samuel G. | Bibliography of Water Pollution Control Benefits and Costs (10/01/1974) | | Development Planning and Research Associates, Inc. |
| Unger, Samuel G. | National Benefits of Achieving the 1977, 1983 and 1985 Water Quality Goals (04/01/1976) |  | Development Planning and Research Associates, Inc. |
| Unger, Samuel G. | National Estimates of Water Quality Benefits (04/01/1975) | | Development Planning and Research Associates, Inc. |
| Unger, Samuel G. | Water Pollution Control Benefits and Costs: Volume I, State-of-the-Art Review (10/01/1973) | | Development Planning and Research Associates, Inc. |
| Unger, Suzanne J. | A Benefits Assessment of Water Pollution Control Programs Since 1972: Part 1, The Benefits of Point Source Controls for Conventional Pollutants in Rivers and Streams (01/01/2000) | | Research Triangle Institute |