著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Heyboer, J. P. and Zijlstra, P.","Transmitting valves : the use of pentodes, tetrodes and triodes in transmitter circuits",2nd impression with amendements,N.V. Philips' Gloeilampenfabrieken (Philips Industries),1953,Philips technical library,,,,https://cir.nii.ac.jp/crid/1130000797504090112