About TAJIMA YOSHIYUKI
About 日本港湾コンサルタント
About KUROYANAGI AKIO
About 沿岸域学会誌
About Okinawa prefecture
About beach
About environmental improvement
About utilization
About maintenance management
About facility and building
About preparation (servicing)
About field study
About leisure facility
About facilities improvement
About Bathing Beaches
About 人工ビーチ
About coastal improvement
About 海岸利用
About coastal area management
About Coastal engineering
About 沖縄
About 人工
About 整備
About 海岸
About 研究