ULUSLARARASI BİLİMSEL ARAŞTIRMALAR DERGİSİ JOURNAL OF INTERNATIONAL SCIENTIFIC RESEARCH Cilt/Volume: 4 Sayı/Issue: 2 Yaz/Summer Yıl/Year: 2019 ULUSLARARASI BİLİMSEL ARAŞTIRMALAR DERGİSİ JOURNAL OF INTERNATIONAL SCIENTIFIC RESEARCH