Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKAMURA Mitsu and JIN-NOUCHI Naoko and ONO Tetsuji and OOYABU Tsuyoshi and TSUKADA Shutaro,SITE INVESTIGATION ON THE PROGRESS OF BACKWARD EROSION PIPING IN HIJI RIVER LEVEE,"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)",2185-6516,Japan Society of Civil Engineers,2020,76,4,363-373,https://cir.nii.ac.jp/crid/1390849376471809792,https://doi.org/10.2208/jscejge.76.4_363