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Lighter than air craft (Qbkmw)

Computer viruses ()
Vehicles and equipment (Q)
    Vehicles (Qb)
         Related Term (Associative): Computer viruses (); Computer viruses ()
        Aircraft (Qbk)
             Related Term (Associative): Aeronautical engineering (Ttkbb)
            Aircraft by type of lift (Qbkm)
                Airplanes (Qbkmf)
                     Use For: Fixed wing aircraft
                Tilt wing aircraft (Qbkmh)
                     Use For: Convertiplanes
                STOL aircraft (Qbkmj)
                     Use For: Short takeoff and landing aircraft
                VTOL aircraft (Qbkmk)
                     Use For: Vertical takeoff aircraft
                Rotary wing aircraft (Qbkmr)
                Lighter than air craft (Qbkmw)
                    Balloons (Qbkmwb)
                    Airships (Qbkmwd)
                         Use For: Blimps; Dirigibles