@misc{indiciae34e8cbad720d, title = {Aeromagnetic map of the First Connecticut Lake and vicinity, northern New Hampshire}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1969}, doi = {10.3133/gp654}, url = {https://pubs.usgs.gov/publication/gp654}, note = {Source identifier: gp654} }