TY  - RPRT
TI  - Circular of the Bureau of Standards no. 1 2nd edition: National Bureau of Standards- its functions and activities
PY  - 1925
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC e2
DO  - 10.6028/NBS.CIRC.e2
ER  -