Evaluation of shallow aquifers in the Helena Valley, Lewis and Clark County, Montana / by Joe A. Moreland and Robert B. Leonard ; prepared in cooperation with Lewis and Clark County and the Montana Bureau of Mines and Geology. (Water-resources investigations) (Open-file report ; 80-1102)
Evaluation of shallow aquifers in the Helena Valley, Lewis and Clark County, Montana / by Joe A. Moreland and Robert B. Leonard ; prepared in cooperation with Lewis and Clark County and the Montana Bureau of Mines and Geology.