installationia: (Hans Haacke, Rhinewater Purification Plant, 1972. Glass and acrylic containers, pump, polluted Rhine water, tubing, filters, chemicals, goldfish, drainage to garden. Museum Haus Lange, Krefeld.) (Pruned: April 2011から) (Hans Haacke,
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installationia: (Hans Haacke, Rhinewater Purification Plant, 1972. Glass and acrylic containers, pump, polluted Rhine water, tubing, filters, chemicals, goldfish, drainage to garden. Museum Haus Lange, Krefeld.) (Pruned: April 2011から) (Hans Haacke,
