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- catalog contributor b9613679.
- catalog created "1940.".
- catalog date "1940".
- catalog date "1940.".
- catalog dateCopyrighted "1940.".
- catalog description ""List of numbered references": p. 44-45.".
- catalog description "Thesis (Ph. D.)--Columbia university.".
- catalog extent "v, 46 p. incl. tables, diagrs.".
- catalog hasFormat "On the theory of tubes with two control grids.".
- catalog isFormatOf "On the theory of tubes with two control grids.".
- catalog issued "1940".
- catalog issued "1940.".
- catalog language "eng".
- catalog publisher "New York [Menasha, Wis., George Banta publishing company]".
- catalog relation "On the theory of tubes with two control grids.".
- catalog subject "537.53".
- catalog subject "QC544.V3 W55".
- catalog subject "Vacuum-tubes.".
- catalog title "On the theory of tubes with two control grids; their use as amplifier, modulators, and detectors, by Alexander H. Wing.".
- catalog type "text".