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Gambar 4: Analisis PiT dan sampel Muhibbah 2011
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Gambar 3: Analisis PiT dan sampel Muhibbah 2010
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Gambar 2: Analisis PiT dan sampel Muhibbah 2009
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Gambar 1: Analisis PiT dan sampel Muhibbah 2008