Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ishikawa Shoji,the first Air Defense Exercise of Kita-Kyushu in July 1931,法政研究,03872882,九州大学法政学会,1989-03-25,55,2/4,1-30,https://cir.nii.ac.jp/crid/1390572174708523008,https://doi.org/10.15017/1892