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Copyright: andresr / 123RF Stock Photo

Copyright: auremar / 123RF Stock Photo

By Loadmaster (David R. Tribble)This image was made by Loadmaster (David R. Tribble)Email the author: David R. TribbleAlso see my personal gallery at Google Picasa (Own work) [CC-BY-SA-3.0 or GFDL], via Wikimedia Commons

http://www.publicdomainpictures.net/view-image.php?image=7890&picture=glass-skyscrapers&large=1

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