Is a search engine for students and researchers for easy accesibility academic information. The search is made in more than one thbousand millions of documents(web pages, books, encyclopedias, journals and newspapers).
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World Wide Science
is a global science gateway—accelerating scientific discovery and progress through a multilateral partnership to enable federated searching of national and international scientific databases and portals.
Cepal
They are databases from the Economic Commission for Latin America and the Caribbean with topics about administration, finance, and marketing. Its collections includes: books, catalogs, journals, newsletters, and notebooks.
Collins Dictionary
Collins is a free online dictionary, thesaurus and reference materials in English, Spanish, and other languages .