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Kuo I-Kuan: 2002-pencil paper21x15cm-14
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Kuo I-Kuan: 2004 pencil 14.1x11 cm paper
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Kuo I-Kuan: 2004 11x15cm paper pastel+pen
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Kuo I-Kuan: 2004 water color,ball pen 10x17.4cm paper
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Kuo I-Kuan: 2004 ink+pastel 17.x18 paper
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Kuo I-Kuan: 2004 pastel +ink 20.4x28cm paper
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Kuo I-Kuan: 2008 12x9cm water color+ink