@misc{1173441,
  author = {CW Mann},
  title = {Letter Circular 918::leather (supersedes Letter Circular 788)},
  year = {1948},
  month = {1948-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.LCIRC.918},
  language = {en},
}