TY - RPRT TI - Chapter A5. Section 6.4.B. Low-Level Mercury AU - Michael Edward Lewis AU - Mark E. Brigham PY - 2004 DO - 10.3133/twri09a5.6.4.b UR - https://pubs.usgs.gov/publication/twri09A5.6.4.B ID - twri09A5.6.4.B ER -