000			00697 a2200181 4500
003			Nust
005			20230725095957.0
040			_cNust
082			_a621.381512,EAS
100			_aAustin V. Eastman _9113803
245			_aFundamental of Vacuum Tubes / _cAustin V. Eastman
250			_a3rd ed
260			_aAmerica _bMc Graw- Hill _c1949
300			_a644p;
505			_aIntroductions to Part I (Page-3), Electronic Emission (Page-5), Construction of Vacuum Tubes (Page-23), High Vacuum Tubes (Page-37), Gas Field Tubes (Page-93), Photoelectric Tubes (Page-132), Part II: Application and Circuits (Page-163).
650			_aTelecommunication Engineering
942			_2ddc _cBK _k621.381512,EAS
999			_c193531 _d193531