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Poisonous gases (Rbmdspg)

Computer viruses ()
Materials (R)
    Classes of materials (Rb)
        Building materials (Rbm)
             Use For: Construction materials
             Related Term (Associative): Equipment (Qt)
            Building materials by properties (Rbmd)
                Hazardous materials (Rbmds)
                     Use For: Dangerous goods; Hazardous substances
                     Related Term (Associative): Computer viruses ()
                    Poisons (Rbmdsp)
                         Use For: Toxic agents; Toxic materials; Toxicants
                         Related Term (Associative): Poisoning (Hme); Biological and chemical weapons (Qtpymb); Toxicology (Tphst)
                        Poisonous gases (Rbmdspg)