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These are a variety of search engines (mostly free, but a few are paid) that covers English, history, the sciences, art, and languages.

Alpha: Computational Intelligence. Find and share research. RefSeek - Academic Search Engine. Digital Library Of The Commons. Digital Library of the Commons hidden Image DatabaseExport Citations Menu:

Digital Library Of The Commons

Microsoft Academic. Home. The National Archives Catalog. Search the National Archives Catalog and other National Archives resources at once for information about our records. We’re excited to announce that in the National Archives Catalog you can now: Enjoy the updated homepage featuring background images from Catalog records Add your comments on digitized records, descriptions, and authority records Find what you need with a more intuitive advanced search Efficiently browse search results with better “Next Page” link placement Track your citizen archivist contributions with updated user account pages Add data from scanned records to your developer toolbox with increased API functionality We Want to Hear from You!

Let us know what you think – what you like and what you don't! Discover a glitch? Contact us at for comments, suggestions, and problems you may experience while using the catalog. e-Print archive. Smithsonian Institution Research Information System. The World Factbook. People from nearly every country share information with CIA, and new individuals contact us daily.

The World Factbook

If you have information you think might interest CIA due to our foreign intelligence collection mission, there are many ways to reach us. If you know of an imminent threat to a location inside the U.S., immediately contact your local law enforcement or FBI Field Office. For threats outside the U.S., contact CIA or go to a U.S. Embassy or Consulate and ask for the information to be passed to a U.S. official. Please know, CIA does not engage in law enforcement. In addition to the options below, individuals contact CIA in a variety of creative ways. If you feel it is safe, consider providing these details with your submission: Your full name Biographic details, such as a photograph of yourself, and a copy of the biographic page of your passport How you got the information you want to share with CIA How to contact you, including your home address and phone number.

Entire CGP Catalog - Basic Search: Full Catalog. Welcome to the Catalog of U.S. Government Publications (CGP)! The CGP is the finding tool for federal publications that includes descriptive information for historical and current publications as well as direct links to the full document, when available. Users can search by authoring agency, title, subject, and general keywords, or click on "Advanced Search" for more options. The catalog offers you the option to find a nearby Federal Depository Library that has a particular publication or that can provide expert assistance in finding and using related U.S. government information. BASE (Bielefeld Academic Search Engine): Basic Search. State Legislative Websites Directory.

Google Libros. Microsoft Academic. Science, health and medical journals, full text articles and books. Welcome to Open Library. Directory of Open Access Journals. JURN : search millions of free academic articles, chapters and theses. for Science - Government Science Portal. CERN Document Server. WorldWideScience. Home. Clarivate. David Rumsey Historical Map Collection. The new MapRank search tool enables geographical searching of the collection by map location and coverage, in a Google Map window.

Pan and zoom the Google Map to the area of the world you want maps of, and the results will automatically appear as a scrollable list of maps with thumbnail images in the right side window. The maps in the right side list are ranked by coverage, with the maps that have coverage closest to your search window listed at the top. Mousing over any map in the list will show the map's coverage as a light red rectangle on top of the Google Map. Clicking on a map in the list will open it in the Luna Browser.

Research at LSE. Fold3 - Historical military records. Internet Modern History Sourcebooks. Internet Modern History Sourcebook Editor: Paul Halsall See Introduction for an explanation of the Sourcebook's goals.

Internet Modern History Sourcebooks

Explanation of Sources of Material Here. See the Help! Page for all the help on research I can offer. The Modern History Sourcebook works as follows: This Main Index page shows all sections and sub sections. Additional Study/Research Aids In addition to the above structure, there are a series of pages to help teacher and students. Modern History in the Movies Bad Links 1. Subjects covered by the source texts in each Section. Studying History Introduction: Using Primary Sources Nature of Historiography Writing History Ancient Theories 19th Century Philosophies of History Professional Theories History and Epistemology History and Anthropology History and Identity Politics Post-Modern Theories Misc.

Internet Ancient History Sourcebooks. Internet Ancient History Sourcebook Editor: Paul Halsall The Internet Ancient History Sourcebook has expanded greatly since its creation, and now contains hundred of local files as well as links to source texts throughout the net.

Internet Ancient History Sourcebooks

History Engine: Tools for Collaborative Education and Research. Education Resources Information Center. Home - Lib AAC. AI-Powered Research Tool. Art cyclopedia: The Fine Art Search Engine. Literary Encyclopedia. ASDL Home – ASDL home portal- gateway to ASDLib, analytical sciences community, and active learning.