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Railroad engineers (Msgbbr)

Building information models ()
     Use For: BIM; Building information modeling; Building information modelling
Computer viruses ()
Computer security ()
     Use For: Cybersecurity
Format and content types ()
Three dimensional printing ()
     Use For: 3D printing; Additive manufacturing
Time series analysis ()
Trigonometry ()
Persons and personal characteristics (M)
    Personnel (Ms)
         Use For: Officials and employees
        Engineering personnel (Msg)
            Engineers (Msgb)
                Civil engineers (Msgbb)
                    Transportation engineers (Msgbbe)
                    Highway engineers (Msgbbh)
                    Railroad engineers (Msgbbr)
                         Related Term (Associative): Railroad engineering (Ttkfwr)
                    Traffic engineers (Msgbbt)