@misc{1180756,
  author = {Joseph G Berke and Catherine H Hudson},
  title = {Procurement of products containing recovered material ::a summary of activities in seven states},
  year = {1981},
  month = {1981-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.81-2316},
  language = {en},
}