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List of Articles کریم نادری مهدیی Open Access Article Abstract Page Full-Text 1 - Investigation and analysis of the most important challenges of the relationship between Agricultural research and Agricultural extension in Hamadan province heshmatollah saadi mahbobeh ataei fatemeh habibi karim i naderi mahdie fatemeh ali tavakoli 10.30495/jaeer.2022.61225.10894