TY  - RPRT
TI  - Bureau circular no. 13 3rd edition: standard specifications for the purchase of carbon-filament incandescent lamps
PY  - 1909
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 13e3
DO  - 10.6028/NBS.CIRC.13e3
ER  -