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Sumbayak, M. C. A.; Silitonga, M.; Sitohang, O. N. M. B.; Wulandari, A.; Sembiring, G. A.; Rajagukguk, N. A.; Sitohang, M. S. Development of Human Excretory System Module Based on Problem Based Learning to Improve Student Learning Outcomes in Class XI Science. Bioscientist j. ilm. bosbiol. 2025, 13, 1541-1553.