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  2. Ulrich's Periodicals Directory - Wikipedia

    en.wikipedia.org/wiki/Ulrich's_Periodicals_Directory

    It is now also supplied on-line as Ulrichsweb, which provides web-based and Z39.50 linking to library catalogs. The online version includes over 300,000 active and current periodicals. The online version includes over 300,000 active and current periodicals.

  3. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    Search engine for natural and physical sciences, social sciences, and humanities. Incorporates arXiv, PubMed, and SciELO. Integrated with ORCID for overlay and peer review services. All articles display Altmetric scores. Free ScienceOpen [134] Scientific Information Database (SID) Engineering & Technology, Medical Science, Basic Science, Human ...

  4. List of search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_search_engines

    Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites ...

  5. AOL

    search.aol.com

    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web. AOL.

  6. Ulrichsweb - Wikipedia

    en.wikipedia.org/?title=Ulrichsweb&redirect=no

    This page was last edited on 30 March 2012, at 21:38 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  7. AOL Search FAQs - AOL Help

    help.aol.com/articles/aol-search-faqs

    When seeking online information, many people turn to search engines like Google, Bing, Yahoo, or AOL Search. These search engines function as digital indexes, organizing available content by topic and sub-topic, much like an index in a book. Each search engine builds its index using distinct methods, typically beginning with an automated ...

  8. Search engine - Wikipedia

    en.wikipedia.org/wiki/Search_engine

    Most search engines employ methods to rank the results to provide the "best" results first. How a search engine decides which pages are the best matches, and what order the results should be shown in, varies widely from one engine to another. [35] The methods also change over time as Internet usage changes and new techniques evolve.

  9. Timeline of web search engines - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_web_search_engines

    Robin Li developed the RankDex site-scoring algorithm for search engines results page ranking [23] [24] [25] and received a US patent for the technology. [26] It was the first search engine that used hyperlinks to measure the quality of websites it was indexing, [27] predating the very similar algorithm patent filed by Google two years later in ...