Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yamada Y.,The Experience of Reversion of Okinawa to Japan and Changes in Concrete,Concrete Journal,0387-1061,Japan Concrete Institute,2022,60,7,573-573,https://cir.nii.ac.jp/crid/1390859616450311040,https://doi.org/10.3151/coj.60.7_573