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• 2011-11-28 19:15 Gauge00 640×895× (69176 bytes)
• 2011-11-28 11:37 Gauge00 640×895× (66585 bytes)
• 2011-11-28 11:33 Gauge00 512×716× (45865 bytes) I created myself; the relations between arctangent and areas
• 2011-11-28 11:29 Gauge00 512×716× (45865 bytes) I created myself; the relations between arctangent and the areas