TY - RPRT TI - Aeromagnetic map of the Palmer quadrangle, Hampden, Hampshire, and Worcester Counties, Massachusetts AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1968 DO - 10.3133/gp617 UR - https://pubs.usgs.gov/publication/gp617 ID - gp617 ER -