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YouTube is a place to discover, watch, upload and share videos.

Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd

English-Spanish Translation Software, Bilingual English-Spanish Dictionaries, Medical Dictionary, Business & Finance Dictionary, Law Dictionary, Information Technology Dictionary, with translations, synonyms, definitions, usage examples, quips, q...

Prezi is the zooming presentation editor

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The world's second largest organization of physicists, APS publishes physics journals and organizes meetings.

PAGINA PARA ESTUDIANTES DE NIVEL SECUNDARIO

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 ...

Quizlet is a lightning fast way to memorize vocabulary lists. It

Academia.edu helps academics follow the latest research.

The authoritative Collins dictionaries now available online. Search amongst hundreds of thousands of words and expressions in Spanish, French, German, Italian, Chinese, Portuguese, Russian and synonyms dictionaries.