@misc{indiciae9d48b52ad25e,
  title = {NALNET book system: Cost benefit study},
  author = {Dewath, N. V. and Palmour, V. E. and Foley, J. R. and Henderson, M. M. and Shockley, C. W.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810010395},
  note = {Source identifier: 19810010395}
}