TY  - RPRT
TI  - Letter Circular 904: electric batteries and standard cells, publications by the staff of the National Bureau of Standards and references to other sources of information (supersedes Letter Circular 846)
PY  - 1948
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 904
DO  - 10.6028/NBS.LCIRC.904
ER  -