أرسل هذا في رسالة قصيرة: Effects of GeO<inf>2</inf>addition on physical and electrical properties of BaFe<inf>0.5</inf>Nb<inf>0.5</inf>O<inf>3</inf>ceramic

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/ //---`'  / //\ \\ | || | ||  | ||__   |  --  // 
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