భూమి: కూర్పుల మధ్య తేడాలు

| title=Nasa's Discovery extends space station

| date=2007-10-28 | url=http://www.telegraph.co.uk/earth/earthnews/3311903/Nasas-Discovery-extends-space-station.html

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| first=Vic | last=Stathopoulos | date=2009-01-08