TY - RPRT TI - Hydrology, Water Quality, and Aquatic Communities of Selected Springs in the St. Johns River Water Management District, Florida AU - Stephen J. Walsh AU - Leel Knowles AU - Brian G. Katz AU - Douglas G. Strom PY - 2009 DO - 10.3133/sir20095046 UR - https://pubs.usgs.gov/publication/sir20095046 ID - sir20095046 ER -