Ba-Er-S, Chalcogen, Lanthanoid, Rare earth, Kertman

• P1211113-2
• S1013520
• S1013518
• C202381-3
• C202381-1
• C202381
• P1211112-1
• P1211112-2
• P1211113-1
• C202380-1
• C202380-3
• C202380