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Document Designation and Title Year Select Item(s) C1325 Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units 08a C1325 Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units 08 C1325 Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cement Substrate Sheets 04 C1325 Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cement Interior Substrate Sheets 99