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结果 21-30 的 101
Development of a state effluent charge system
1972
Eutrophication of surface waters--Lake Tahoe
1971 | 1972
Investigation of porous pavements for urban runoff control
1972
Thelen, Edmund | Grover, Wilford C. | Hoiberg, Arnold J. | Haigh, Thomas I.
Laboratory and economic studies were undertaken to determine the feasibility of utilizing porous pavements to alleviate combined sewer overflow pollution and reduce the design parameters of storm sewer systems by allowing storm runoff to percolate back into the ground. Laboratory studies of candidate materials revealed a porous asphaltic concrete containing 5.5% asphalt by weight and aggregate graded to allow a water flow of 76 in. per hour to be the optimal porous road material. Materials testing for stability, durability, and freeze-thaw susceptibility proved this material suitable for use in road construction.
显示更多 [+] 显示较少 [-]Use of general equillibrium in regional water resource planning
1972
Poirier, J. Eugène | Harrington, John M.
Extensions of mathematical programming for regional water quality management
1972
Evaluation of beef cattle feedlot waste management alternatives
1972
Butchbaker, A. F.
Aquatic and wetland plants of Southwestern United States
1972
Correll, Donovan Stewart | Correll, Helen B.
Biochemical ecology of water pollution
1972
Dugan, P. R. (Patrick R)
An inter-disciplinary approach to water pollution.
显示更多 [+] 显示较少 [-]Oil pollution and marine ecology
1972
Nelson-Smith, A (Anthony)
The effect of chlorination on selected organic chemicals
1972