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Commodity groups (Bhg)

Computer viruses ()
Transportation operations (B)
     Related Term (Associative): Management and organization (C)
    Commodities (Bh)
         Use For: Freight commodities
        Commodity flow (Bha)
             Related Term (Associative): Freight traffic (Bfb)
        Commodity classification (Bhc)
             Use For: Freight classification
        Commodity density (Bhd)
             Use For: Freight density
        Commodity groups (Bhg)
            Bulk cargo (Bhgb)
                 Use For: Bulk commodities
            Hazardous materials (Bhgd)
                 Related Term (Associative): 
            Food (Bhgf)
            Beverages (Bhgg)
            Perishables (Bhgp)
                 Use For: Perishable cargo
            Refrigerated cargo (Bhgr)
            Waste products (Cargo) (Bhgw)
        Commodities by type (Bhk)