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结果 21-30 的 101
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 [-]Nitrate in the unsaturated zone under agricultural lands
1972
Pratt, P. F. (Parker F)
Use of general equillibrium in regional water resource planning
1972
Poirier, J. Eugène | Harrington, John M.
Oil pollution and marine ecology
1972
Nelson-Smith, A (Anthony)
Aquatic and wetland plants of southwestern United States
1972
Correll, Donovan Stewart,
Filtration of municipal waste with a moving bed contactor
1972
Mixon, F. O.
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.
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1972
Murphy, R. Sage | Nyquist, David
