1. Digital data acquisition and development of geographic information system coverages for use with the public water-supply wells and springs in Tennessee Author/Creator: Connell, Joseph F., author Publication/Creation: Nashville, Tennessee : U.S. Geological Survey, 1993 Resource Type: Book Access & Availability: Loading
2. Documentation of a digital spatial data base for hydrologic investigations, Broward County, Florida Author/Creator: Sonenshein, R. S., author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading