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Nurul Saadah Agustina, Wahyu Sopandi, Atep Sujana. Needs Analysis of Student Worksheets to Develop Collaborative Skills in Learning Science. ICEE [Internet]. 2023Jun.28 [cited 2024Dec.6];5(1):469-77. Available from: http://proceedings2.upi.edu/index.php/icee/article/view/3161