@misc{indiciae5ec464f0249c,
  title = {Columbia CO survey - Molecular clouds and spiral structure},
  author = {Cohen, R. S. and Dame, T. M. and Thaddeus, P.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810043297},
  note = {Source identifier: 19810043297}
}