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Are you Halil Yaşar Kollu, author of the books below?
Devletin Gizli Sahipleri Heyet by Halil Yaşar Kollu Devletin Gizli Sırları Heyet 2 by Halil Yaşar Kollu Heyet 3 / Devletin Anlaşılmamış Devri by Halil Yaşar Kollu Sultan Mehmet’in Casusları by Halil Yaşar Kollu Heyet 4 - Türklerin Kutsal Hikayesi by Halil Yaşar Kollu Bilimin Altın Çağı by Halil Yaşar Kollu


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