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Chemical Abstracts Service, CAS, is the producer of Chemical Abstracts, SciFinder, and co-partner in operating STN International, all of which provide comprehensive, authoritative, and reliable access to chemical and scientific information from data...

International führender Wissenschaftsverlag - Wissenschaft, Technik, Medizin, Architektur, Wirtschaft und Verkehr - Zeitschriften, Bücher und EContent.

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...

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.

Choose from more than 100 million new & used books, used textbooks, and rare, out-of-print books from over 8,000 independent book stores around the world.

Alexa provides information about websites including Top Sites, Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information and Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-on that shows d...

Trade books for free with our online book swap. We are not just Paperbacks! Find a huge selection of hardbacks, audio books, romance novels and more.

Worlds.com, Inc

San Francisco - User Reviews and Recommendations of Top Restaurants, Shopping, Nightlife, Entertainment, Services and More at Yelp

Flickriver - view images as a