TY - RPRT TI - Investigation of total and hexavalent chromium in filtered and unfiltered groundwater samples at the Tucson International Airport Superfund Site AU - Fred D. Tillman AU - R. Blaine McCleskey AU - Edyth Hermosillo PY - 2016 DO - 10.1007/s00128-016-1882-8 UR - https://pubs.usgs.gov/publication/70177066 ID - 70177066 ER -