@misc{1188906,
  author = {J E Hill and D A Didion},
  title = {Comparison of power output and exhaust pollutants of two postal service vehicles operated on three hydrocarbon fuels:},
  year = {1973},
  month = {1973-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.74-460},
  language = {en},
}