TY - RPRT TI - Estimation of flood-frequency characteristics and the effects of urbanization for streams in the Philadelphia, Pennsylvania area AU - J.F. Bailey AU - W.O. Thomas AU - K. L. Wetzel AU - T.J. Ross PY - 1989 DO - 10.3133/wri874194 UR - https://pubs.usgs.gov/publication/wri874194 ID - wri874194 ER -