About OKUMURA MAKOTO
About 東北大 大学院工学研究科
About urban traffic
About road transportation
About railway transportation
About air transportation
About travel time(journey)
About scale down
About infrastructure
About urban facility
About traffic volume
About regional economy
About time companding
About Urban traffic
About 土木
About 日本
About 社会
About インフラ
About 都市間交通
About 時間短縮