TY - RPRT TI - Changes in Selected Metals Concentrations from the Mid-1980s to the Mid-2000s in a Stream Draining the Picher Mining District of Oklahoma AU - William J. Andrews AU - Jason R. Masoner PY - 2011 DO - 10.2174/1875040001104010036 UR - https://pubs.usgs.gov/publication/70208729 ID - 70208729 ER -