TY - RPRT TI - Characterization of limestone reacted with acid-mine drainage in a pulsed limestone bed treatment system at the Friendship Hill National Historical Site, Pennsylvania, USA AU - Jane M. Hammarstrom AU - Philip Sibrell AU - Harvey E. Belkin PY - 2003 DO - 10.1016/s0883-2927(03)00105-7 UR - https://pubs.usgs.gov/publication/70024876 ID - 70024876 ER -