Fundamentals of vacuum tubes
621.38151
E13F,3 Eastman, Austin V.
Fundamentals of vacuum tubes
-- London : McGraw-Hill , 1949
57224 xxi, 644p.:ill.
Vacuum-tubes
E13F,3 Eastman, Austin V.
Fundamentals of vacuum tubes
-- London : McGraw-Hill , 1949
57224 xxi, 644p.:ill.
Vacuum-tubes