@misc{indiciaed3ca0f661d03,
  title = {Shaded relief and sea floor topography of Quadrangle 1 in western Massachusetts Bay offshore of Boston, Massachusetts},
  author = {Bradford Butman and Laura Hayes and W. W. Danforth and P. C. Valentine},
  year = {2003},
  doi = {10.3133/i2731b},
  url = {https://pubs.usgs.gov/publication/i2731B},
  note = {Source identifier: i2731B}
}