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Document Designation and Title Year Select Item(s) C457/C457M Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 11 C457/C457M Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 10a C457/C457M Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 10 C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 09 C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 08d C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 08c C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 08b C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 08a C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 08 C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 06 C457 Standard Test Method for Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete 98