(1993). Industrial and agricultural impacts on the hydrologic environment: Proceedings of the second USA/C/S joint conference on environment hydrology and hydrogeology. United States: Water Environment Federation.
Dyfyniad Arddull ChicagoIndustrial and Agricultural Impacts On the Hydrologic Environment: Proceedings of the Second USA/C/S Joint Conference On Environment Hydrology and Hydrogeology. United States: Water Environment Federation, 1993.
Dyfyniad MLAIndustrial and Agricultural Impacts On the Hydrologic Environment: Proceedings of the Second USA/C/S Joint Conference On Environment Hydrology and Hydrogeology. United States: Water Environment Federation, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.