Spangenberg, Karl R.
Vacuum tubes / Karl R. Spangenberg. - New York : McGraw-hill book company, c 1948. - xvii, 860 p. : ill. ; 22 cm.
Includes index.
340 340
Vacuum-tubes.
621.381512 / S23v
Vacuum tubes / Karl R. Spangenberg. - New York : McGraw-hill book company, c 1948. - xvii, 860 p. : ill. ; 22 cm.
Includes index.
340 340
Vacuum-tubes.
621.381512 / S23v