McGrath, T. J., & Sagan, V. E. (2000). Recommended LRFD specifications for plastic pipe and culverts. National Academy Press.
Chicago Style aipamenaMcGrath, T. J., and V. E. Sagan. Recommended LRFD Specifications for Plastic Pipe and Culverts. Washington, D.C: National Academy Press, 2000.
MLA aipamenaMcGrath, T. J., and V. E. Sagan. Recommended LRFD Specifications for Plastic Pipe and Culverts. National Academy Press, 2000.
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