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- 30019383 contributor B754806.
- 30019383 created "1930.".
- 30019383 date "1930".
- 30019383 date "1930.".
- 30019383 dateCopyrighted "1930.".
- 30019383 description "Bibliography: p. 8-9.".
- 30019383 description "High-voltage corona in air.--An amplifier to adapt the oscillograph to low-current investigations.".
- 30019383 description "Thesis (PH. D.)--Johns Hopkins university, 1928.".
- 30019383 extent "9. 7 p.".
- 30019383 issued "1930".
- 30019383 issued "1930.".
- 30019383 language "eng".
- 30019383 publisher "Baltimore,".
- 30019383 subject "Corona (Electricity)".
- 30019383 subject "Electric currents".
- 30019383 subject "Oscillograph".
- 30019383 subject "QC643 .W23 1928".
- 30019383 tableOfContents "High-voltage corona in air.--An amplifier to adapt the oscillograph to low-current investigations.".
- 30019383 title "High voltage corona in air, by Sigmund K. Waldorf ...".
- 30019383 type "text".