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Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.

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

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

HELPS YOU FIND THE ebooks YOU WANT! Over 165,000 Titles, 1800 Publishers, Kindle, iPad, Nook, PDF, Html formats, etc.

Cardiology Online is a cardiology guide and directory for congresses, meetings and publications on heart disease and heart failure of the International Academy of Cardiology and other organizations and institutions.

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Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

The world's leading online source of free ebooks