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
"Grammer, George","A course in radio fundamentals : Study Assignments, Experiments and Examination Questions",,The American Radio Relay League,1948,The Radio amateur's library,,,,https://cir.nii.ac.jp/crid/1130282272330369920