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ACLS is a private non-profit federation of national scholarly organizations dedicated to the advancement of humanities.

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Prezi is the zooming presentation editor

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PDFDOWNLOAD is the most popular free pdf search and download website. Let's search and download for free millions of pdf files.

Academia.edu helps academics follow the latest research.

Find what you want in a library near you with WorldCat, a global catalog of library collections.

Twitter is without a doubt the best way to share and discover what is happening right now.

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you...

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.