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2025. The Level of Effectiveness of The in-service Qualification Program for teachers of Primary Grades (1-3) in the Faculty of Education at Sana’a University to their Professional Development. Sana’a University Journal of Human Sciences. 4, 10 (Oct. 2025), 545–580. DOI:https://doi.org/10.59628/jhs.v4i10.1849.