@misc{indiciae8bb8585a5933,
  title = {Thermionic cathode evaluation study Interim report, 1 Jan. - 30 Jun. 1967},
  author = {Hill, F. T.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670027593},
  note = {Source identifier: 19670027593}
}