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Chalcogen, Cu-Fe-O, Kannan
P1521251-7
P1521251-4
P1521251-5
P1521251-6
P1521252-3
P1521253-3
P1521253-2
P1521253-1
P1521252-2
P1521252-1
P1521251-3
P1521251-2
P1521251-1
P1521253-5
P1521253-4
P1521252-5
P1521252-4
P1521251-9
P1521251-8