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المصدر: Journal of Agricultural Economics and Social Sciences. 10:169-174
مصطلحات موضوعية: Investment efficiency, Botany, Mathematics
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::dcdf20e35324c3c2261c289d3d981646
https://doi.org/10.21608/jaess.2019.36078