TY - RPRT TI - Aeromagnetic map of the Hamburg quadrangle, New London and Middlesex Counties, Connecticut AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1973 DO - 10.3133/gp869 UR - https://pubs.usgs.gov/publication/gp869 ID - gp869 ER -