TY  - RPRT
TI  - Challenge theme 1: Understanding and preserving ecological resources: Chapter 3 in United States-Mexican Borderlands: Facing tomorrow's challenges through USGS science
AU  - J. Bruce Moring
AU  - Diana M. Papoulias
AU  - Charles van Riper
PY  - 2013
DO  - 10.3133/cir13803
UR  - https://pubs.usgs.gov/publication/cir13803
ID  - cir13803
ER  -