List of Articles Factor substitution Open Access Article Abstract Page Full-Text 1 - Reaction of European Industries Importing Iranian Oil to Energy Prices: Inter-factor analysis and Inter-fuel analysis somayeh azami Kiumars Soheili marjan ghasemi Open Access Article Abstract Page Full-Text 2 - Production structure of trout aquaculture industry in Chahar Mahal Bakhtiary province, Iran Roya Eshraghi Samani Saeed Yazdani Sayyadmahdi Sadrolashrafi Gholamreza Paykani