Databases O-P

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• OAIster - Collection of freely available academically-oriented digital resources. Project of the University of Michigan Digital Library Production Services and funded by a Mellon grant.     
• Oxford English Dictionary Online - Etymologies, definitions and usage of English worldwide, from 1150 to the present.   

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• PAIS - Covers the range of the social sciences, with emphasis on national and international economic, political and public policy issues.
• PapersFirst - Citations to papers presented at congresses worldwide.    
• PressDisplay - Over 200 newspapers...More than 50 countries...Original format, layout and pagination...
• ProceedingsFirst - An index of worldwide conference proceedings, as well as a list of papers presented at various meetings.     
• Project Muse - provides full-text access to more than 100 scholarly journal titles from the Johns Hopkins University Press and other University presses covering the Humanities, Social Sciences, and Mathematics.   
• ProQuest Historical Newspapers - digitally reproduces every issue of the New York Times (1851-1999) and the Wall Street Journal (1889-1985) from cover-to-cover. It provides full page-image and full-text searching of these newspapers.     
• PsycARTICLES - is a database of over 44,000 full-text articles from more than 50 journals published by the American Psychological Association and participating publishers. The journals cover psychology and related behavioral and social sciences. Coverage is 1985 to date.    
• PsycINFO - contains references to articles in more than 1,300 periodicals as well as technical reports, dissertations, and other materials in psychology and related behavioral and social sciences.