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thomas e waddell
3 cilt bulundu.
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The Off-Site Costs of Soil Erosion
Thomas E. Waddell · Conservation Foundation
284 sayfa · 1986
Water / Environmental aspects / Congresses / Soil erosion / Pollution
Managing agricultural chemicals in the environment
Thomas E. Waddell · Conservation Foundation
78 sayfa · 1988
Agricultural chemicals / Environmental aspects of Agricultural chemicals / Pollution
The economic damages of air pollution
Thomas E. Waddell, United States. Environmental Protection Agency. Office of Research and Development · Washington Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
156 sayfa · 1974
Air / Pollution / Economic aspects