TY  - RPRT
TI  - Aeromagnetic map of part of the Salem Depot quadrangle, Rockingham County, New Hampshire and Essex County, Massachusetts
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1970
DO  - 10.3133/gp712
UR  - https://pubs.usgs.gov/publication/gp712
ID  - gp712
ER  -