TY  - RPRT
TI  - Development of ground-water vulnerability database for the U.S. Environmental protection agency's hazard ranking system using a geographic information system
AU  - John S. Clarke
AU  - Jerry W. Sorensen
AU  - Henry G. Strickland
AU  - George Collins
PY  - 1992
UR  - https://pubs.usgs.gov/publication/70016749
ID  - 70016749
ER  -