TY  - RPRT
TI  - Circular of the Bureau of Standards no. 188 2nd edition: United States government master specification for ribbons, computing and recording machine
PY  - 1927
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 188e2
DO  - 10.6028/NBS.CIRC.188e2
ER  -