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Spiral Crown, 1982
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The Planes of Nature, 1987
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House of Music, 1993
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Reunion, 1993
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The Optimist, 1998
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Primary Compass, 2000
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Fountain of Commitment, 2001
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Southern Circle, 2004
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Primary Separation, 2005
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Fountain for Villa Astaldi, 2007
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Basic Action, 2011
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Equator, 2011
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Open Eyes, 2011
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Cindy's Song, 2015
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Frontier, 2017