@misc{1162741,
  author = {Betty L Oberholtzer},
  title = {Publications of the National Bureau of Standards 1968-1969:},
  year = {1970},
  month = {1970-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.305supp1},
  language = {en},
}