TY  - RPRT
TI  - Letter Circular 1120: NBS guidelines for use of the metric system
PY  - 1977
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 1120r1977
DO  - 10.6028/NBS.LCIRC.1120r1977
ER  -