TY  - RPRT
TI  - Preliminary investigation of ground-water occurrences in the Weldon Spring area, St. Charles County, Missouri
AU  - Claude M. Roberts
AU  - C.V. Theis
PY  - 1951
DO  - 10.3133/ofr821008
UR  - https://pubs.usgs.gov/publication/ofr821008
ID  - ofr821008
ER  -