Focazio, M. J. (2002). Assessing ground-water vulnerability to contamination. US Geological Survey circular 1224.
Chicago Style CitationFocazio, Michael J. "Assessing Ground-water Vulnerability to Contamination." US Geological Survey Circular 1224 2002.
MLA CitationFocazio, Michael J. "Assessing Ground-water Vulnerability to Contamination." US Geological Survey Circular 1224 2002.
Warning: These citations may not always be 100% accurate.