TY - RPRT TI - The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States AU - John D. Horton AU - Carma A. San Juan AU - Douglas B. Stoeser PY - 2017 DO - 10.3133/ds1052 UR - https://pubs.usgs.gov/publication/ds1052 ID - ds1052 ER -