[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Branch of Information Services [distributor], <1994-
-- ch. B. Effects of land use on quality of water in stratified-drift aquifers in Connecticut / by Stephen J. Grady -- ch. C. Assessment of nonpoint-source contamination of the high plains aquifer in south-central Kansas / by John O. Helgesen, Lloyd E. Stullken, and A.T. Rutledge -- ch. D. Effects of land use on water quality of the Fountain Creek alluvial aquifer, east-central Colorado / by Daniel T. Chafin -- -- ch. F. Assessment of nonpoint-source contamination in central Florida / by E.R. German