TY  - RPRT
TI  - Ion exchange capture of copper, lead, and zinc in acid-rock drainages of Colorado using natural clinoptilolite; preliminary field studies
AU  - G. A. Desborough
PY  - 1992
DO  - 10.3133/ofr92614
UR  - https://pubs.usgs.gov/publication/ofr92614
ID  - ofr92614
ER  -