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the article about bibliographic databases for information about databases giving bibliographic information about finding books and journal articles. Note that "free" or "subscription" can refer both to the availability of the database or of the journal articles included. This has been indicated as precisely as possible in the lists below.
Refdesk - free and family-friendly web site that indexes and reviews quality, credible, and current web-based resources; DeepDyve - big archive of literary and scholarly journal articles; free five-minute full-text previews.
Dictionaries and encyclopedias: reference works containing multiple entries for different words or topics. Wikipedia is an example of an encyclopedia. Archival and other primary sources: historic documents. This page outlines appropriate use of primary sources. Magazine articles: short papers in popular or trade publications.
Encompasses articles on the topic of mathematics: Free Encyclopedia of Triangle Centers: English Information about ten thousands of triangle centers, including coordinates, operations, incidence, equations, etc. Free EqWorld: English, Russian Articles on mathematical equations: Free MathWorld: English Articles on a wide variety of mathematics ...
For example, the Moon landing conspiracy theories article may include material from reliable websites, movies, television specials, and books that are not peer-reviewed. By parity of sources , critiques of that material can likewise be gleaned from reliable websites and books that are not peer-reviewed.
Beall's List is a list kept by Jeffrey Beall of questionable and shady open-access scientific journals. Articles in journals on Beall's List are presumed not reviewed and should usually be treated as blog posts. Esquire, an established American magazine, does not come off too well in this anecdote (from Jacobs, A. J. (2005). The Know-It-All ...
Some online dictionaries are organized as lists of words, similar to a glossary, while others offer search features, reverse lookups, and additional language tools and content such as verb conjugations, grammar references, and discussion forums. The variety of online dictionaries for specialized topics is enormous, covering a wide range of ...
This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services. True open-access journals can be split into two categories: