TY  - RPRT
TI  - Aeromagnetic map of part of the Marblehead South quadrangle, Essex and Suffolk Counties, Massachusetts
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1970
DO  - 10.3133/gp710
UR  - https://pubs.usgs.gov/publication/gp710
ID  - gp710
ER  -