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Munir, Miftakhul and Hidayanto, Habibi Nur (2022) THE IMPLEMENTATION OF PROBLEM-BASED LEARNING (PBL) TO IMPROVE THE STUDENTS’ SPEAKING SKILLS AT SMP MUHAMMADIYAH PK KOTTABARAT SURAKARTA (A CLASSROOM ACTION RESEARCH OF EIGHT GRADE IN THE ACADEMIC YEAR 2022/2023). Skripsi thesis, FAB/PBI.