B704 Geology of the igneous rocks of Essex County, Massachusetts.
1920.
GP717 Aeromagnetic map of the South Groveland Quadrangle, Essex County,
Massachusetts. 1970 1:24,000.
HA196 Synopsis of water resources of the Ipswich River basin, Massachusetts.
1964 1:58,000.
HA247 Water resources of the Parker and Rowley River basins, Massachusetts.
1967 1:24,000.
HA614 Hydrology and water resources of the Shawsheen River basin,
Massachusetts. 1980 1:48,000 1:96,000.
HA616 Hydrology and water resources of the lower Merrimack River
basin, Massachusetts, from Concord River,
Lowell, to Plum Island, Newburyport. 1980 1:48,000.
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