| skos:altLabel | - PBL
- PBL system
- Problem Based Learning
- Problem based learning
- Problem-Based
- Problem-Based Learning
- Problem-Based-Learning
- Problem-Based-Learning (PBL)
- Problem-based
- case and problem-based learning
- problem based
- problem based learning
- problem based learning (PBL)
- problem- based learning
- problem-based
- problem-based curriculum
- problem-based learning
- problem-based learning (PBL)
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