TY  - BOOK
AU  - Rider, John F.
TI  - Vacuum tube voltmeters
PY  - 1941///
CY  - New York
PB  - John F Rider Publishers
KW  - Astronomy and Astrophysics Thesaurus
KW  - Vacuum Tubes
KW  - Voltmeters
N1  - Donated by Mrs. Bappu
ER  -