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可在安卓獲取IS 458 1988的歷史版本
部分:預製混凝土管(有和沒有加固)
Indian Standard SPECIFICATION FOR PRECAST CONCRETE PIPES ( WITH AND WITHOUT REINFORCEMENT ) ( Third Revision)Last updated on 2018年02月06日
Indian Standard SPECIFICATION FOR PRECAST CONCRETE PIPES ( WITH AND WITHOUT REINFORCEMENT ) ( Third Revision)
IS 458 1988
0.1 by Civil Inc,
2018年02月06日