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 "Veen, J. J. de",The Rural Access Roads Programme : appropriate technology in Kenya,,International Labour Office,1980,A WEP study,,9221022048,,https://cir.nii.ac.jp/crid/1130000794335175296