TY  - RPRT
TI  - The topographic and geologic atlas of the United States
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1909
DO  - 10.3133/70047702
UR  - https://pubs.usgs.gov/publication/70047702
ID  - 70047702
ER  -