@misc{28641,
  author = {Georgia Harris},
  title = {NISTIR 6969, Selected Laboratory and Measurement Practices, and Procedures, to Support Basic Mass Calibrations (2012 Edition)},
  year = {2012},
  month = {2012-03-05},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}