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Communication systems by recipient (Dsf)

Communication and control (D)
    Communication (Ds)
         Related Term (Associative): 
        Communication systems (Dsb)
             Use For: Communications networks
             Related Term (Associative): ; Information systems (Xbf)
        Communication systems by recipient (Dsf)
            Mass communication (Dsfm)
            Traveler information and communication systems (Dsfp)
                 Use For: Passenger information
                 Related Term (Associative): ; Kiosks (Pfbk); Information systems (Xbf); Crowdsourcing (Xbkcc)
        Communication devices (Dsg)
             Use For: Communication equipment
             Related Term (Associative): Equipment (Qt)
        Transmission (Dsm)
             Related Term (Associative): Radio frequency (Sfrwbfr)