List of Articles غلظت نیمه کشنده Open Access Article Abstract Page Full-Text 1 - LC50 Determination of ferrous iron (Fe2+) in common carp (Cyprinus carpio) Tahereh Naji Hossein Zadeh Ali Atef Yekta Amin Kaivan Open Access Article Abstract Page Full-Text 2 - Symmetric Error Structure in Stochastic DEA Z. Falah Asl