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EPA:10.1562/0031-8655(2000)072<0497:ETUREM>2.0.CO;2
EPA:10.1562/0031-8655(2000)072<0766:TEOAVA>2.0.CO;2
EPA:10.1562/0031-8655(2001)073<0621:UDOA>2.0.CO;2
EPA:10.1562/0031-8655(2001)074<0088:DRFUII>2.0.CO;2
EPA:10.1562/0031-8655(2001)074<0261:ASURCM>2.0.CO;2
EPA:10.1562/0031-8655(2004)080<0583:PIHLEC>2.0.CO;2
EPA:10.1562/2004-05-10-RN-160.1
EPA:10.1562/2006-08-09-RA-1001