Vacuum tubes /
Spangenberg, Karl R.
Vacuum tubes / Karl R. Spangenberg. - New York : McGraw-Hill Book Co., 1948. - xvii, 860 p. : illus., diagrs. ; 24 cm. - McGraw-Hill electrical and electronic engineering series .
Includes bibliographical references and index.
48001249
Vacuum-tubes.
621.384132
Vacuum tubes / Karl R. Spangenberg. - New York : McGraw-Hill Book Co., 1948. - xvii, 860 p. : illus., diagrs. ; 24 cm. - McGraw-Hill electrical and electronic engineering series .
Includes bibliographical references and index.
48001249
Vacuum-tubes.
621.384132