TY  - RPRT
TI  - National Cartographic Information Center Newsletter No. 6
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1977
DO  - 10.3133/70039592
UR  - https://pubs.usgs.gov/publication/70039592
ID  - 70039592
ER  -