Lubis, Rizka Riswani, Indayana Febriani Tanjung, and Miza Nina Adlini. 2023. “Development of Student Worksheets Based on Problem Based Learning on Excretory System Material for Grade XI Senior High School”. Bioeduca : Journal of Biology Education 5 (2):91-104. https://doi.org/10.21580/bioeduca.v5i2.16483.