@misc{1187041,
  author = {William H Venable},
  title = {The National Measurement System for spectrophotometry:},
  year = {1977},
  month = {1977-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.75-940},
  language = {en},
}