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Car wheels (Railroads) (Qpgyrwr)

Computer viruses ()
Vehicles and equipment (Q)
    Vehicle components (Qp)
         Related Term (Associative): Computer viruses ()
        Vehicle frames (Qpg)
            Structural components of specific vehicles (Qpgy)
                Railcar structural components (Qpgyr)
                    Wheelsets (Railroads) (Qpgyrw)
                        Car wheels (Railroads) (Qpgyrwr)
                             Use For: Railroad car wheels
                             Related Term (Associative): Wheels (Qpmw); Rolling contact (Smdr)