@misc{1167981,
  author = {Sidney H Greenfeld},
  title = {Report on the evaluation of twenty-one coating-grade roofing asphalts:},
  year = {1956},
  month = {1956-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.4732},
  language = {en},
}