TY - RPRT TI - Ground-water hydraulics - A summary of lectures presented by John G. Ferris at short courses conducted by the Ground Water Branch, part 1, Theory AU - D. B. Knowles PY - 1955 DO - 10.3133/ofr5585 UR - https://pubs.usgs.gov/publication/ofr5585 ID - ofr5585 ER -