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- 22018138 alternative "Super-regenerative circuit.".
- 22018138 contributor B626389.
- 22018138 created "[c1922]".
- 22018138 date "1922".
- 22018138 date "[c1922]".
- 22018138 dateCopyrighted "[c1922]".
- 22018138 extent "52 p.".
- 22018138 issued "1922".
- 22018138 issued "[c1922]".
- 22018138 language "eng".
- 22018138 publisher "New York, N.Y., Radio Directory and Pub. Co.".
- 22018138 subject "Radio.".
- 22018138 subject "TK6550 .E5".
- 22018138 title "The Armstrong super-regenerative circuit, by George J. Eltz, jr. ...".
- 22018138 type "text".