@misc{indiciaebc0949075aed,
  title = {Bouguer gravity map and related filtered anomaly maps of Morocco},
  author = {T.G. Hildenbrand and R.P. Kucks and M.F. Hamouda and A.B. Bellot},
  year = {1988},
  doi = {10.3133/ofr88517},
  url = {https://pubs.usgs.gov/publication/ofr88517},
  note = {Source identifier: ofr88517}
}