@misc{indiciae3d07c89c97cd,
  title = {The utility of SKYLAB photo-interpreted earth resources data in studies of marine geology and coastal processes in Puerto Rico and the Virgin Islands},
  author = {James Trumbull},
  year = {1977},
  doi = {10.3133/ofr78579},
  url = {https://pubs.usgs.gov/publication/ofr78579},
  note = {Source identifier: ofr78579}
}