@misc{1178866,
  author = {Felix Y Yokel},
  title = {Development of draft construction safety standards for excavations ::an NBSNIOSH publication : volume II},
  year = {1983},
  month = {1983-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.83-2693v2},
  language = {en},
}