Mode of access: Internet at the USGS web site. Address as of 11/21/03: http://fl.water.usgs.gov/PDF%5Ffiles/wri00%5F4219%5Fkatz.pdf; current access available via PURL.
Katz, Brian G. Monthly variability and possible sources of nitrate in ground water beneath mixed agricultural land use, Suwannee and Lafayette Counties, Florida