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Pipe culverts (Pdyrdp)

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Facilities (P)
     Use For: Complexes; Installations
    Specialized facilities (Pd)
        Bridges and culverts (Pdy)
             Related Term (Associative): Highway facilities (Pmr)
            Culverts (Pdyr)
                Types of culverts (Pdyrd)
                    Box culverts (Pdyrdb)
                    Concrete culverts (Pdyrdc)
                    Metal culverts (Pdyrdm)
                    Pipe culverts (Pdyrdp)
                        Corrugated pipe culverts (Pdyrdpc)