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2013AASHTO TP 99-2013 Standard Method of Test for Determining the Influence of Road Surfaces on Traffic Noise Using the Continuous-Flow Traffic Time-Integrated Method (CTIM)
2011AASHTO TP 99-2011 Standard Method of Test for Determining the Influence of Road Surfaces on Traffic Noise Using the Continuous-Flow Traffic Time-Integrated Method (CTIM)
2004LST EN 13997-2004 Irrigation techniques - Connection and control accessories for use in irrigation systems - Technical characteristics and testing