TY  - RPRT
TI  - Ground-water age and flow at the Great Sand Dunes National Monument, south-central Colorado
AU  - Michael G. Rupert
AU  - Niel Plummer
PY  - 2004
DO  - 10.3133/fs20043051
UR  - https://pubs.usgs.gov/publication/fs20043051
ID  - fs20043051
ER  -