TY - RPRT TI - Aeromagnetic map of the Ellington quadrangle and part of the Rockville quadrangle, Hartford and Tolland Counties, Connecticut AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1969 DO - 10.3133/gp648 UR - https://pubs.usgs.gov/publication/gp648 ID - gp648 ER -