000			00355nam a2200145Ia 4500
008			180710s9999 xx 000 0 und d
020			_a74311
082			_a621.38151 _bEAS
100			_aEASTMAN, Austin V.
245			_aFundamentals of vacuum tubes
250			_a3rd ed.
260			_aNew York _bMcgraw-hill _c1949
300			_axxi, 644 p.
942			_cS
999			_c64629 _d64629