TY - RPRT TI - Regional ground-water-flow models of surficial sand and gravel aquifers along the Mississippi River between Brainerd and St. Cloud, central Minnesota AU - J. F. Ruhl AU - T.K. Cowdery PY - 2004 DO - 10.3133/sir20045087 UR - https://pubs.usgs.gov/publication/sir20045087 ID - sir20045087 ER -