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1- Space today
2- Revista Fapesp
https://revistapesquisa.fapesp.br/
3- Scientific American
4- Ciência hoje
5- Superinteressante
Books and Journals
- 6 – Bioline International
- 7 – Directory of Open Access Journals
- 8 – Google Scholar
- 9 – Google Books
- 10 – HighBeam Research
- 11 – SpringerLink
- 12 – Online Journals Search Engine
- 13 – Open Library
- 14 – WorldCat
All about business and economy
- 15 – BPubs
- 16 – Corporate Information
- 17 – DailyStocks
- 18 – EconLit
- 19 – EDGAR Search
- 20 – Inomics
- 21 – National Bureau of Economic Research
- 22 – Research Papers in Economics
- 23 – Virtual Library Labour History
History
- 24 – American History Online
- 25 – David Rumsey Historical Map Collection
- 26 – Digital History
- 27 – Fold3
- 28 – History and Politics Out Loud
- 29 – History Engine
- 30 – Internet Ancient History Sourcebook
- 31 – Internet Modern History Sourcebook
Social Sciences
- 32 – Anthropological Index Online
- 33 – Anthropology Review Database
- 34 – Behavioral Brain Science Archive
- 35 – Encyclopedia of Psychology
- 36 – Ethnologue
- 37 – Political Information
- 38 – Psycline
- 39 – Social Science Research Network
- 40 – The SocioWeb
- 41 – WikiArt
Science
- 42 – Athenus
- 43 – CERN Document Server
- 44 – Chem BioFinder
- 45 – Science.gov
- 46 – Strategian
- 47 – WorldWideScience
Math and technology
- 48 – CiteSeerX
- 49 – Current Index to Statistics
- 50 – Inspec
- 51 – MathGuide
- 52 – The Collection of Computer Science Bibliographies
- 53 – ZMATH Online Database
Database and files
- 54 – Archives Hub
- 55 – arXiv e-Print Archive
- 56 – Catalog of U.S. Government Publications
- 57 – CIA World Factbook
- 58 – Library of Congress
- 59 – NASA Historical Archive
- 60 – National Agricultural Library
- 61 – National Archives
- 62 – OpenDOAR
- 63 – Smithsonian Institution Research Information System
- 64 – State Legislative Websites Directory
- 65 – The British Library Catalogues & Collections
General
- 66 – Digital Library of the Commons Repository
- 67 – Dogpile
- 68 – Infomine
- 69 – MetaCrawler
- 70 – Microsoft Academic Search
- 71 –OAIster
- 72 – RefSeek
- 73 – Preply
References
Others
- 77 – Artcyclopedia
- 78 – Circumpolar Health Bibliographic Database
- 79 – Education Resources Information Center
- 80 – Lexis
- 81 – MedlinePlus
- 82 – PubMed
