PT - JOURNAL ARTICLE AU - Boyer, Douglas G. TI - A sinkhole filter for protection of karst groundwater AID - 10.2489/jswc.63.1.25A DP - 2008 Jan 01 TA - Journal of Soil and Water Conservation PG - 25A--25A VI - 63 IP - 1 4099 - http://www.jswconline.org/content/63/1/25A.short 4100 - http://www.jswconline.org/content/63/1/25A.full