TY - RPRT TI - Sources and chronology of nitrate contamination in spring waters, Suwannee River basin, Florida AU - Brian G. Katz AU - H.D. Hornsby AU - J. K. Bohlke AU - M.F. Mokray PY - 1999 DO - 10.3133/wri994252 UR - https://pubs.usgs.gov/publication/wri994252 ID - wri994252 ER -