@misc{1147126, author = {Joe Rothleder}, title = {The mass unit disseminated to surrogate laboratories using the NIST portable mass calibration package:}, year = {1994}, month = {1994-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.5290}, language = {en}, }