| http://www.w3.org/ns/prov#value | - g of: noble metals, metals, halogens and photoactive compounds comprising combinations of compounds including TiO2 and Titanates, Fe2O3 and compounds of Fe2O3 and other oxides, Silver and Copper Oxides, halides and chalcogenides, Vanadium pentoxide and vandates, Tin oxides and stannates, Silver Ion Conductors, NbO2 and Niobates, TiO2 and NbO2 solid solutions, Bi2O3 and bismuth chalcogenides, Silic
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