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Document Designation and Title Year Select Item(s) D4554 Standard Test Method for In Situ Determination of Direct Shear Strength of Rock Discontinuities 02(2006) D4554 Standard Test Method for In Situ Determination of Direct Shear Strength of Rock Discontinuities 02 D4554 Standard Test Method for In Situ Determination of Direct Shear Strength of Rock Discontinuities 90(1995)