@misc{245406, author = {Georgia Harris}, title = {NISTIR 6969, Selected Laboratory and Measurement Practices and Procedures to Support Basic Mass Calibrations (2019 Edition)}, year = {2019}, month = {2019-05-07}, publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.6969-2019}, language = {en}, }