TY  - RPRT
TI  - Recent (2008-10) concentrations and isotopic compositions of nitrate and concentrations of wastewater compounds in the Barton Springs zone, south-central Texas, and their potential relation to urban development in the contributing zone
AU  - Barbara Mahler
AU  - MaryLynn Musgrove
AU  - Chris Herrington
AU  - Thomas L. Sample
PY  - 2011
DO  - 10.3133/sir20115018
UR  - https://pubs.usgs.gov/publication/sir20115018
ID  - sir20115018
ER  -