CCTG法国通用技术标准第69分册-外文
地下工程通用技术规范条款手册(C.C.T.G. - 工程)第69分册
General Technical Specifications for Public Works Contracts (C.C.T.G. - Works) Fascicle No. 69: Underground Works
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General Technical Specifications for Public Works Contracts (C.C.T.G. - Works) Fascicle No. 69: Underground Works
General Technical Specifications for Public Works Contracts - Underground Works