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Thanh Hue, H. and Thi Loan, B. 2025. DIFFICULTIES IN EDUCATIONAL ACTIVITIES OF SECONDARY SCHOOL TEACHERS IN THE NORTHERN MIDLANDS AND MOUNTAINOUS PROVINCES.
Journal of Science Educational Science. 70, 1 (Jan. 2025), 101–112
. DOI:https://doi.org/10.18173/2354-1075.2025-0010.