Items where Author is "Widyasari, Ratna"
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Thesis
Widyasari, Ratna (2015) PENGARUH MODEL PROBLEM-BASED LEARNING (PBL) TERHADAP KEMAMPUAN ANALISIS DAN PENGUASAAN KONSEP EKOSISTEM PADA SISWA KELAS X SMA N 2 KLATEN. S1 thesis, Universitas Negeri Yogyakarta.