TY - RPRT TI - Distribution and transport of trace substances in the Schuylkill River basin from Berne to Philadelphia, Pennsylvania AU - John K. Stamer AU - Thomas H. Yorke AU - Gary L. Pederson PY - 1985 DO - 10.3133/wsp2256a UR - https://pubs.usgs.gov/publication/wsp2256A ID - wsp2256A ER -