TY  - RPRT
TI  - Circular of the Bureau of Standards no. 141: description and operation of an audio-frequency amplifier unit for simple radio receiving outfits
PY  - 1923
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 141
DO  - 10.6028/NBS.CIRC.141
ER  -