About the editor J. L. SCHNOOR is Professor and Co-Director of the Center for Global and Regional Environmental Research at the Department of Civil and Environmental Engineering, the University of Iowa. He has consulted for the Swiss Federal Institute of Technology and the EPA and has directed a number of water quality modeling and toxic substance research projects. Dr. Schnoor is an authority on surface water and groundwater quality modeling and physical-chemical treatment of toxic chemicals and has written extensively on these subjects. He received his PhD in environmental engineering from the University of Texas.

• Partial table of contents: DEPOSITION AND TRANSPORT. Emissions Inventory of Heavy Metals and Hydrophobic Organics in theGreat Lakes Basin (G. Wilber, et al.). Dissipation of Pesticides in the Environment (J. Plimmer). PHYSICAL-CHEMICAL PROCESSES. Kinetics and Catalysis of Mineral Nitrogen Phototransformations inAqueous Medium (G. Duka, et al.). Equilibrium Adsorption of Chemical Vapors onto Surface Soils: ModelPredictions and Experimental Data (K. Valsaraj & L.Thibodeaux). MICROBIAL TRANSFORMATIONS. Movement and Transformation of Halogenated Aliphatic Compounds inNatural Systems (P. McCarty, et al.). Adaptation of Microorganisms for Pesticide Degradation (G.Vasilyeva, et al.). MODELING OF PESTICIDES AND CHEMICALS. Mathematical Model for Chemical Spills and Distributed SourceRunoff to Large Rivers (J. Schnoor, et al.). Modeling the Accumulation of Organic Chemicals in Aquatic FoodChains (J. Connolly & R. Thomann). POSTSCRIPT. New Directions in Pest Management (J. Menn & A. Christy). Index.

About the editor J. L. SCHNOOR is Professor and Co-Director of the Center for Global and Regional Environmental Research at the Department of Civil and Environmental Engineering, the University of Iowa. He has consulted for the Swiss Federal Institute of Technology and the EPA and has directed a number of water quality modeling and toxic substance research projects. Dr. Schnoor is an authority on surface water and groundwater quality modeling and physical-chemical treatment of toxic chemicals and has written extensively on these subjects. He received his PhD in environmental engineering from the University of Texas.

• Partial table of contents: DEPOSITION AND TRANSPORT. Emissions Inventory of Heavy Metals and Hydrophobic Organics in theGreat Lakes Basin (G. Wilber, et al.). Dissipation of Pesticides in the Environment (J. Plimmer). PHYSICAL-CHEMICAL PROCESSES. Kinetics and Catalysis of Mineral Nitrogen Phototransformations inAqueous Medium (G. Duka, et al.). Equilibrium Adsorption of Chemical Vapors onto Surface Soils: ModelPredictions and Experimental Data (K. Valsaraj & L.Thibodeaux). MICROBIAL TRANSFORMATIONS. Movement and Transformation of Halogenated Aliphatic Compounds inNatural Systems (P. McCarty, et al.). Adaptation of Microorganisms for Pesticide Degradation (G.Vasilyeva, et al.). MODELING OF PESTICIDES AND CHEMICALS. Mathematical Model for Chemical Spills and Distributed SourceRunoff to Large Rivers (J. Schnoor, et al.). Modeling the Accumulation of Organic Chemicals in Aquatic FoodChains (J. Connolly & R. Thomann). POSTSCRIPT. New Directions in Pest Management (J. Menn & A. Christy). Index.

About the editor J. L. SCHNOOR is Professor and Co-Director of the Center for Global and Regional Environmental Research at the Department of Civil and Environmental Engineering, the University of Iowa. He has consulted for the Swiss Federal Institute of Technology and the EPA and has directed a number of water quality modeling and toxic substance research projects. Dr. Schnoor is an authority on surface water and groundwater quality modeling and physical-chemical treatment of toxic chemicals and has written extensively on these subjects. He received his PhD in environmental engineering from the University of Texas.

• Partial table of contents: DEPOSITION AND TRANSPORT. Emissions Inventory of Heavy Metals and Hydrophobic Organics in theGreat Lakes Basin (G. Wilber, et al.). Dissipation of Pesticides in the Environment (J. Plimmer). PHYSICAL-CHEMICAL PROCESSES. Kinetics and Catalysis of Mineral Nitrogen Phototransformations inAqueous Medium (G. Duka, et al.). Equilibrium Adsorption of Chemical Vapors onto Surface Soils: ModelPredictions and Experimental Data (K. Valsaraj & L.Thibodeaux). MICROBIAL TRANSFORMATIONS. Movement and Transformation of Halogenated Aliphatic Compounds inNatural Systems (P. McCarty, et al.). Adaptation of Microorganisms for Pesticide Degradation (G.Vasilyeva, et al.). MODELING OF PESTICIDES AND CHEMICALS. Mathematical Model for Chemical Spills and Distributed SourceRunoff to Large Rivers (J. Schnoor, et al.). Modeling the Accumulation of Organic Chemicals in Aquatic FoodChains (J. Connolly & R. Thomann). POSTSCRIPT. New Directions in Pest Management (J. Menn & A. Christy). Index.