List of Articles تابع تولید کاب-داگلاس Open Access Article Abstract Page Full-Text 1 - Total Factor Productivity of Khosh Noosh Beverage Company naserali yadollahzadeh tabari seyedeh zahra khoshabi Open Access Article Abstract Page Full-Text 2 - Agro Biodiversity Effects on Farm Production Risk: a Case Study of Wheat Producers in Mashhad S. Sadat hamraz M.R. Kohansal M. Ghorbani