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An online public access catalog (OPAC) is an online database of materials held by a library or group of libraries. Learn about the history, features, and types of OPACs, as well as related systems such as bibliographic databases and digital library systems.
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Find out which schools offer virtual or online education programs and are accredited by the US Department of Education. This list includes fully online schools and programs, as well as hybrid options, and covers various fields of study.
AOL Mail offers secure and personalized email with features like AOL Mail, news, and weather for free. You can also access your email on the go with an iOS & Android app and get help from experts.
Learn about the origins, development and objectives of library catalogs, which are registers of bibliographic items in libraries. Find out how card catalogs, online public access catalogs and union catalogs work and how they help users to find, identify, select and obtain books.
Online Books Page is an index of over 2 million e-text books on the Internet, edited by John Mark Ockerbloom and hosted by the University of Pennsylvania library. It was one of the first and most comprehensive efforts to catalog online texts with library science standards.
A comprehensive list of online encyclopedias that are accessible or formerly accessible on the Internet, with their names, languages, descriptions, statuses, access, and content licenses. Wikipedia is one of the largest and most popular online encyclopedias, and it started as a complementary project to Nupedia, which was discontinued.
Learn what an online university is, how it differs from a traditional campus-based university, and how it evolved from distance education and telecommunications. Find out how online universities provide access to higher education programs through electronic media, such as the Internet.