TY  - RPRT
TI  - Using multiple chemical indicators to assess sources of nitrate and age of groundwater in a karstic spring basin
AU  - Brian Katz
AU  - R. Copeland
AU  - T. Greenhalgh
AU  - R. Ceryak
AU  - W. Zwanka
PY  - 2005
DO  - 10.2113/11.4.333
UR  - https://pubs.usgs.gov/publication/70027583
ID  - 70027583
ER  -