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The terms "free", "subscription", and "free & subscription" will refer to the availability of the website as well as the journal articles used. Furthermore, some programs are only partly free (for example, accessing abstracts or a small number of items), whereas complete access is prohibited (login or institutional subscription required).
NASA Technical Reports Server (NTRS) - resource for students, educators, researchers, and the public for access to NASA's current and historical technical literature since it was first released in 1994; Free website Analyzer - is a free online service that collects information about domains and keywords for which they were optimized.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Student wiki-type database at the University of Michigan of animal natural history, distribution, classification, and conservation biology. Free APpedia: Chinese Contains articles on the subject of general animal protection: Free ARKive: English Visual and audio recordings of the world's species Defunct Encyclopedia of Life: English, French
A reliable source is one that presents a well-reasoned theory or argument supported by strong evidence. Reliable sources include scholarly, peer-reviewed articles or books written by researchers for students and researchers, which can be found in academic databases and search engines like JSTOR and Google Scholar.
Academia.edu is a commercial platform for sharing academic research that is uploaded and distributed by researchers from around the world. All academic articles are free to read by visitors, however uploading and downloading articles is restricted to registered users, with additional features accessible only as a paid subscription. [3] [4]
According to a 2014 study by Nature and a 2016 article in Times Higher Education, it is the largest academic social network in terms of active users, [4] [5] although other services have more registered users, and a 2015–2016 survey suggests that almost as many academics have Google Scholar profiles. [6]
Pages in category "Scholarly search services" The following 40 pages are in this category, out of 40 total. This list may not reflect recent changes. *