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Liberation, 1964
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Suspension, 1964
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Study for Blue Yellow Prism, 1965
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Study for Yellow Red Prism, 1965
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Meeting Point, 1969
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Docking in Space, 1970
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Study for Hybrid, 1973
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Study for Castor and Pollux, 1973
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Study for To and Fro, 1973
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Study for Pamlico, 1975
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Study for Mountaineer, 1981
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Study for Vibrations, 1983
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Lavender Rise, 1983
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Expanding Universe, 1985
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Gathering Force, 1985
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Runner, 1986
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Cantilever, 1986
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Watkins Glen, 1987
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Fair Harbour, 1989
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Phoenix, 1989
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Eurynome, 1993
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Leto, 1993
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Metis, 1993
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Themis, 1993
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Paneopeos, 1995
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Forest, 2000
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Babar Brown, 2001
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No Dice, 2002
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Night and Day, 2003
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Sagittarius, 2003
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Lemon Drop, 2006
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Footprint, 2006
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Reflector, 2008
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Green Interference, 2008
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Blue Yellow, 2008
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Chromatic Three, 2009
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Leaning Twist, 2010
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Analogous Eclipse, 2010
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Emerald, 2010
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Chrysoprase, 2012
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Labradorite, 2012
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Jet, 2012
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Black Diamond, 2012
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Sardonyx, 2013
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Dayo, 2014
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Nightfall, 2014
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Dusk to Dawn, 2014
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Daylight, 2015
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Gray on Lavender, 1974
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Green on Burgundy, 1974
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Lavender on Tan, 1974
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Lemon Yellow on Gray, 1974
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Pink on Orange, 1974
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Red-Orange on Lavender, 1974
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Yellow on Red, 1974
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Tan on Blue Green, 1974