@misc{1191751,
  author = {Raymond L Sanford},
  title = {Circular of the Bureau of Standards no. 456::magnetic testing},
  year = {1946},
  month = {1946-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.CIRC.456},
  language = {en},
}