About KOIKE HIROTAKA
About 宇都宮共和大
About automobile
About built-up area
About discharge
About city
About public transportation
About community planning
About society
About carbon dioxide emissions
About compact city
About cavitation
About sustainable society
About Transport traffic and service in general
About Development,redevelopment,and urban improvement
About 交通
About まちづくり
About 持続可能な交通