TY  - RPRT
TI  - National water-quality assessment program; water use in the Rio Grande Valley, 1990
AU  - S. F. Richey
AU  - S. R. Ellis
PY  - 1993
DO  - 10.3133/ofr93456
UR  - https://pubs.usgs.gov/publication/ofr93456
ID  - ofr93456
ER  -