@misc{1192476,
  author = {B L Bean and John R Dise},
  title = {Causes of variation in chemical analyses and physical tests of Portland cement:},
  year = {1969},
  month = {1969-01-01 05:01:00},
  publisher = {Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.BSS.17},
  language = {en},
}