@misc{indiciae001235bed328,
  title = {Dual frequency receiver system for Mariner 1967 to Venus Final engineering report},
  author = {Fair, B. C., Jr. and Long, R. A.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690000829},
  note = {Source identifier: 19690000829}
}