فهرس المقالات changes in the cost of goods sold حرية الوصول المقاله صفحة الملخص نص كامل 1 - The effect of political connections and affiliation to business groups on changes in the cost of goods sold and the risk of financial turmoil mohammadreza khosheghbal Samira Zarei Khadijeh Khodabakhshi Parijan
