@misc{1131566,
  author = {Stanley W. Gilbert},
  title = {Characterization of the U.S. Construction Labor Supply:},
  year = {2012},
  month = {2012-12-01 05:12:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.1135},
  language = {en},
}