@misc{indiciae631eb1107918,
  title = {Skylab 4 preliminary reference Earth Resources Experiment Package (EREP) pass planning document. Volume 2: EREP sites and S190 swath study of selected revs},
  author = {Lunde, A. N.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720007176},
  note = {Source identifier: 19720007176}
}