TY - RPRT TI - Lake phosphorus loading from septic systems by seasonally perched ground water, Puget Sound region, Washington AU - Robert J. Gilliom AU - Clayton R. Patmont PY - 1982 DO - 10.3133/ofr82907 UR - https://pubs.usgs.gov/publication/ofr82907 ID - ofr82907 ER -