PETROL EKONOMİSİNDE PETROL DIŞI İHRACAT: ÜLKELER ARASI FARKLILAŞMA NİTELİĞİ VE KARAKTERİNE İLİŞKİN DENEYSEL BİR ÇALIŞMA (NON-OIL EXPORT IN THE OIL ECONOMY: AN EMPIRICAL STUDY OF THE CHARAKTER AND FACTORS OF CROSS-COUNTRY DIFFERENTIATION) - Hamza HALİLOV - | The Journal of Academic Social Science Studies