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Google Books is a service from Google that searches the full text of books and magazines that Google has scanned and stored in its database. It offers different access levels depending on the copyright status and permission of the books, and has been criticized for potential copyright violations and errors.
Google Scholar is a free web search engine that indexes various formats and disciplines of academic publications, such as journals, books, theses, and patents. It also provides features for citation analysis, author profiles, and related articles.
A comprehensive and dynamic list of notable databases and search engines for finding and accessing academic articles, books, datasets, and other resources. Compare the coverage, retrieval qualities, access costs, and providers of different services across disciplines and domains.
Z-Library is a shadow library project that hosts millions of books, articles and other files without regard to copyright. It is illegal in many jurisdictions and has faced domain seizures, lawsuits and arrests, but remains accessible through alternative domains and the dark web.
Wikipedia entry for Google Patents.Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office.
Advanced search options in various search engines (like DuckDuckGo or Google) can help to pinpoint coverage about topics. To narrow searches to specific sites, here's something that works in DuckDuckGo and Google searches (be sure to include the topic in quotation marks): "Search topic" site:www.siteexample.com This generates results only from ...
An online search engine that charts the frequencies of any set of search strings using n-grams from printed sources between 1500 and 2019. Learn about its history, usage, limitations, and related concepts such as culturomics and lexical analysis.
Learn how to use the powerful search engine of Wikipedia, with special characters, parameters, and operators. Find tips and tricks, custom search boxes, and other search tools.
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