TY  - RPRT
TI  - Letter Circular 553: electric batteries and standard cells: publications by the staff of the National Bureau of Standards and references to other sources of information
PY  - 1939
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 553
DO  - 10.6028/NBS.LCIRC.553
ER  -