List of Articles کاب داگلاس Open Access Article Abstract Page Full-Text 1 - Analyze the Factors Affecting Labor Productivity in Producing Grapes (Case Study: Grape Growers Doshman Zeyari Region of Mamasani Township, Fars Province, Iran) Mostafa Teimoori Seyed Rooholah Mousavi Open Access Article Abstract Page Full-Text 2 - Providing an Applicable Model to Calculate the Return & Spillover of Research & Development in Iran's Selected Industries Ahmad Jafarnejad Abolfazl Kiani Bakhtiyari Mohammad Hajali Open Access Article Abstract Page Full-Text 3 - Economic Analysis of Input Utilization Patterns in Wheat Production in the Ziwiyeh Region of Saqqez County Dawood Aminpoor mohammad ali asaadi