TY  - RPRT
TI  - Shorter contributions to geochemistry 1979
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1980
DO  - 10.3133/pp1129ai
UR  - https://pubs.usgs.gov/publication/pp1129AI
ID  - pp1129AI
ER  -