TY  - RPRT
A2  - United States Geological Survey
PY  - 2002
DA  - 2002//
TI  - Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality
T3  - Digital data series 73
ET  - [Elektronische Ressource], Version 1.0
CY  - [Reston, Va.]
SN  - 0607984902
LA  - English
N1  - by J. Thomas Nash
ID  - 348208278
ER  -