1. Reconnaissance investigation of the geology and hydrogeology of Lackland Air Force Base, San Antonio, Texas Author/Creator: Ozuna, G. B., author Publication/Creation: Austin, Texas : U.S. Geological Survey, 1993 Resource Type: Book Access & Availability: Loading
2. Reconnaissance of geology and water resources along the north flank of the Sweet Grass Hills, north-central Montana Author/Creator: Tuck, L. K., author Publication/Creation: Helena, Montana : U.S. Geological Survey, 1993 Resource Type: Book Access & Availability: Loading