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Europeana aggregates and provides access to over 50 million digitized items from more than 3,500 European cultural heritage institutions. The

109+ million of chemical structures. Free chemical structure database providing fast text and structured search. Search by chemical name, brand,

Gives access to online education and research articles. Several languages and automatic translation also. Note: not everything is 100% free,

Search over the 500k UK theses from over 120 UK institutions: the Electronic Theses Online Service (EThOS), operated by the

“The world’s largest collection of open access research papers” we could not describe better. 207+ million of them. Sortable by

Aggregates 200 international research institutions and permits a centralized search on their research articles and databases. If you must start

Search millions of worldwide research publications. Integral or abstract view, up to the last 10 years, from 9000+ publishers. Free

Mantida pela Comissão Eletrotécnica Internacional (IEC), a Electropedia fornece todos os termos e definições usados para eletricidade e...

A comprehensive site to explain all rules, how and when, to define a new set of GTIN or EAN code,

Biggest repository of free and paid LCA databases. No Life Cycle Assessment without these: the openLCA Nexus service is a

Recursos