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Chalcogen, Oxide, Hf-Nb, Trigonal
S307573
S1535379
S2060465
P20130531-1
P20130531-2
P20130531-3
P20130531-4
P20130531-5
P20130531-6
P20130531-7
P20130531-8
P20130531-9
P20130531-10