Europeana Images and Archives Search
Europeana aggregates and provides access to over 50 million digitized items from more than 3,500 European cultural heritage institutions. The
Resources
Libraries, databases, repositories, classifieds
ChemSpider Chemistry Database
109+ million of chemical structures. Free chemical structure database providing fast text and structured search. Search by chemical name, brand,
Google Scholar
Gives access to online education and research articles. Several languages and automatic translation also. Note: not everything is 100% free,
EThOS UK Theses Search
Search over the 500k UK theses from over 120 UK institutions: the Electronic Theses Online Service (EThOS), operated by the
CORE Research Papers Search
“The world’s largest collection of open access research papers” we could not describe better. 207+ million of them. Sortable by
WorldWideScience Research Gateway
Aggregates 200 international research institutions and permits a centralized search on their research articles and databases. If you must start
ProQuest Publications Search
Search millions of worldwide research publications. Integral or abstract view, up to the last 10 years, from 9000+ publishers. Free
Electropedia Electrotechnical Vocabulary
Maintained by the International Electrotechnical Commission (aka IEC), Electropedia provides all the terms and definitions used for the electricity and
Global Trade Item Number (GTIN) Rules
A comprehensive site to explain all rules, how and when, to define a new set of GTIN or EAN code,
Life Cycle Assessment Databases
Biggest repository of free and paid LCA databases. No Life Cycle Assessment without these: the openLCA Nexus service is a