@misc{1162611,
  author = {R L Koeser},
  title = {Report of the 53rd National Conference on Weights and Measures, 1968:},
  year = {1969},
  month = {1969-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.311},
  language = {en},
}