@misc{1191876,
  author = {C E Waters},
  title = {Circular of the Bureau of Standards no. 426::inks},
  year = {1940},
  month = {1940-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.CIRC.426},
  language = {en},
}