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List of Articles seyed mahmoud hosseini Open Access Article Abstract Page Full-Text 1 - Factors influencing sustainability of private extension services from the perspective of public sector experts in Zanjan and Qazvin provinces Razieh Keshavarz Bahaghighat seyed mahmoud hosseini Seyed Jamal Hosseini Farhad Lashgarara 10.30495/jaeer.2022.51180.10800