List of Articles Monopoly Open Access Article Abstract Page Full-Text 1 - Market Structure and Social Costs in Cement Industry: The Case study of Iran سید شمس الدین حسینی سمیه دودانگه Open Access Article Abstract Page Full-Text 2 - Feasibility study of the pricing of crude oil by OPEC and OECD countries using game theory in the form of a win– win Reza Fahimi Doab Ahmad Sabahi M. H. Mahdavi Adeli Ahmad Seyfi Open Access Article Abstract Page Full-Text 3 - The history of transmogrification in Multinational Corporations aliasghar aghaee mohammad reza paseban Open Access Article Abstract Page Full-Text 4 - Nazmiyeh (Police) and its Place in the Ideology of Reza Shah's Government Afsaneh Igder Hamed Ameri Golestani Hossein Karimifard Sara Najafpour