@misc{indiciae9dbfa9631dd5,
  title = {Sea floor topography of Quadrangle 6 in the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts},
  author = {P. C. Valentine and T. S. Unger and J. L. Baker and E. T. Roworth},
  year = {1997},
  doi = {10.3133/ofr97507},
  url = {https://pubs.usgs.gov/publication/ofr97507},
  note = {Source identifier: ofr97507}
}