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[17 Dec 2010|12:38pm]
berlīnes vakuuma pasta sistēma

http://www.zdnet.co.uk/news/it-strategy/2008/11/27/life-before-email-a-look-back-at-the-vacuum-post-39563443/#story


Ņujorkas vakkuma pasta sistēma

http://www.postalmuseum.si.edu/exhibits/2b1b6_tubemail.html
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