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Red Octagon, 1969
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Blue Octagon, 1969
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Ring Engraving, 1970
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Rose Madder (Red Disc), 1970
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Ladder 4, 1972
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Ladder 5, 1972
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Ladder V, 1974
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Gate, 1974
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Dunhuang Series 4, 1988
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Dunhuang Series 3, 1988
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Dunhuang Series 2, 1988
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Dunhuang Series 1, 1988
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Blue Wash, 1993
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Untitled Lithograph (Grey on white), 1993
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Time Shift B, 1993
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Time Shift F, 1993
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Time Shift E, 1993
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Time Shift D, 1993
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Time Shift C, 1993
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Time Shift A, 1993
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Shaded Grey, 1993