TY - RPRT TI - Concentrations of metals in aquatic invertebrates from the Ozark National Scenic Riverways, Missouri AU - Christopher J. Schmitt AU - William G. Brumbaugh AU - John M. Besser AU - Thomas W. May PY - 2007 DO - 10.3133/ofr20071435 UR - https://pubs.usgs.gov/publication/ofr20071435 ID - ofr20071435 ER -