Dream Projects: Giant Clean-Air 'Bubbles' Would Create Urban Havens

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Proposed bubble-like structures containing environmentally controlled air would offer urban havens in polluted cities.

23.11	EVA 6
23.11	8
23.11	SEVENTEEN ALWAYS YOURS Weverse 13
23.11	DX
23.11	No.23/1998
23.11	DVD 9
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23.11	CD His Melody
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