@misc{1166876,
  author = {Arthur E Newman},
  title = {Distribution of outgoing first class lettermail at the Washington, D.C. Post Office:},
  year = {1959},
  month = {1959-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.6365},
  language = {en},
}