TY  - RPRT
TI  - Challenge theme 2: assuring water availability and quality in the 21st century: Chapter 4 in United States-Mexican Borderlands: Facing tomorrow's challenges through USGS science
AU  - James Callegary
AU  - Jeff Langeman
AU  - Jim Leenhouts
AU  - Peter Martin
PY  - 2013
DO  - 10.3133/cir13804
UR  - https://pubs.usgs.gov/publication/cir13804
ID  - cir13804
ER  -