العقربي معن, الحريبي معع. THE DEGREE OF AVAILABILITY OF THE NEXT GENERATION SCIENCE STANDARDS (NGSS) IN THE TEACHER OF BIOLOGY PREPARATION PROGRAM, FACULTY OF EDUCATION, ADEN. Electron. J. Univ. Aden Hum. Social Sci. [Internet]. 2023Sep.30 [cited 2025Apr.3];4(3):458-75. Available from: https://ejua.net/index.php/EJUA-HS/article/view/281