@misc{1192961,
  author = {Hubert R Snoke and Leo J Waldron},
  title = {Survey of roofing materials in the north central states:},
  year = {1941},
  month = {1941-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.BMS.75},
  language = {en},
}