Thomas, Richard W, Cuttino, David, Transportation Research Board. "Appendix I - Proposed Draft Standard Specification for Corrugated Polyethylene Drainage Pipe Containing Recycled Polyethylene, 300- to 1,500-mm Diameter." NCHRP Report 696: Performance of Corrugated Pipe Manufactured with Recycled Polyethylene Content. Washington, DC: The National Academies Press, 2011.
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