TY - RPRT TI - Ground-water quality of alluvial and sedimentary-rock aquifers in the vicinity of Fairplay and Alma, Park County, Colorado, September-October 2002 AU - Roderick F. Ortiz PY - 2004 DO - 10.3133/fs20043065 UR - https://pubs.usgs.gov/publication/fs20043065 ID - fs20043065 ER -