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Document Designation and Title Year Select Item(s) C12 Standard Practice for Installing Vitrified Clay Pipe Lines 09 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 08 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 07 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 06 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 04e1 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 03 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 02 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 01 C12 Standard Practice for Installing Vitrified Clay Pipe Lines 00