TY - RPRT TI - Elements of a predictive model for determining beach closures on a real time basis: the case of 63rd Street Beach Chicago AU - Greg A. Olyphant AU - Richard L. Whitman PY - 2004 DO - 10.1023/b:emas.0000038185.79137.b9 UR - https://pubs.usgs.gov/publication/1001040 ID - 1001040 ER -