TY  - RPRT
TI  - Letter Circular 895: simplified practice recommendations (supersedes Letter Circular 883)
PY  - 1948
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 895r1948
DO  - 10.6028/NBS.LCIRC.895r1948
ER  -