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農業技術革新の普及過程と農村における人材育成 Diffusion process of agricultural innovation and human resource development in rural HARHASH, Maha El Sayed Abd El Hafiz 岩手大学 博士 (農学) doctoral thesis 岩手大学 2012 2012-09-25 VoR application/pdf 1 132 甲第571号 https://iwate-u.repo.nii.ac.jp/record/9573/files/harhash_maha_el_sayed_abd_el_hafiz.pdf https://doi.org/10.15113/00009567 https://iwate-u.repo.nii.ac.jp/records/9573 eng open access