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Magnesium Quadrank, 1976Learn More -
Venus Well, 1978Learn More -
Sulcus, 1980Learn More -
Cascade, 1984 (2009 re-fabricated)Learn More -
Mons (Düsseldorf), 1986Learn More -
Quarm Fe, 1990Learn More -
36 Four Corners (Σ, Square, Run, Pile), 1997Learn More -
Isoclast 01, 2004Learn More