TY  - RPRT
TI  - National Cartographic Information Center Newsletter No. 4
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1976
DO  - 10.3133/70039591
UR  - https://pubs.usgs.gov/publication/70039591
ID  - 70039591
ER  -