TY - RPRT TI - Geophysical surveys near the Charles George Municipal Landfill and Flint Pond, Tyngsboro, Massachusetts AU - J. D. Ayotte AU - Thomas J. Mack AU - C. M. Johnston PY - 1999 DO - 10.3133/ofr99231 UR - https://pubs.usgs.gov/publication/ofr99231 ID - ofr99231 ER -