TY  - RPRT
TI  - Geological Survey research 1963; Summary of investigations
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1963
DO  - 10.3133/pp475a
UR  - https://pubs.usgs.gov/publication/pp475A
ID  - pp475A
ER  -