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Lestari, Ni Wayan Nila and Fadiawati, Noor and Jalmo, Tri (2018) Improving the Students’ Creative Thinking using Problem Based Worksheet on the Topic of Environmetal Pollution. Jurnal Pendidikan Progresif, 8 (2). pp. 127-137. ISSN e-ISSN: 2550-1313 | p-ISSN: 2087-9849