TY - RPRT TI - Factors controlling the major ion chemistry of streams in the Blue Ridge and Valley and Ridge physiographic provinces of Virginia and Maryland AU - L.J. Puckett AU - O.P. Bricker PY - 2006 DO - 10.1002/hyp.3360060108 UR - https://pubs.usgs.gov/publication/70017222 ID - 70017222 ER -