@misc{1163196,
  author = {R K Bell and O Menis and J I Shultz},
  title = {Standard Reference Materials:Methods of analysis of NBS clay standards},
  year = {1972},
  month = {1972-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.260-37},
  language = {en},
}