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00572797
00572797
http://id.ndl.go.jp/auth/ndlna/00572797
reinforced concrete
P349
Q184190-5C4DF7E0-E8E1-4B35-9ECE-A249F4C0D21E
P349
00572797
http://id.ndl.go.jp/auth/ndlna/00572797