TY - RPRT TI - Environmental occurrence of the enterococcal surface protein ( esp ) gene is an unreliable indicator of human fecal contamination AU - M.N. Byappanahalli AU - K. Przybyla-Kelly AU - D.A. Shively AU - R.L. Whitman PY - 2008 DO - 10.1021/es800481p UR - https://pubs.usgs.gov/publication/70033376 ID - 70033376 ER -