
Revision Of Bs 8000 Workmanship On Building Sites - Part 9: 1989 Code Of Practice For Cement/sand Levelling Screeds And Concrete Wearing Screeds
出版:British Standards Institution

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Revision Of Bs 8000 Workmanship On Building Sites - Part 9: 1989 Code Of Practice For Cement/sand Levelling Screeds And Concrete Wearing Screeds
出版:British Standards Institution
專家解讀視頻