TY  - RPRT
TI  - Letter Circular 1070: some references on metric information including a chart on all you need to know about metric (supersedes NBS special publication 389)
PY  - 1977
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 1070
DO  - 10.6028/NBS.LCIRC.1070
ER  -