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Types of locomotives (Qbfmcc)

Vehicles and equipment (Q)
    Vehicles (Qb)
         Related Term (Associative): ; 
        Railroad trains (Qbf)
             Use For: Trains
             Related Term (Associative): 
            Train components (Qbfm)
                Locomotives (Qbfmc)
                    Types of locomotives (Qbfmcc)
                        Multiple unit locomotives (Qbfmccm)
                        Slave locomotives (Qbfmccp)
                        Switching locomotives (Qbfmccs)
                    Locomotives by motive power (Qbfmcp)