TY  - RPRT
TI  - Circular of the Bureau of Standards no. 29: announcement of a change in the value of the international unit
PY  - 1910
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 29
DO  - 10.6028/NBS.CIRC.29
ER  -