John and Doris Campbell Library -- Open Access Electronic Journals

	Social and Human Sciences Online Periodicals (full text) -- Free access to specialized articles from about 700 periodicals in the Social and Human Sciences.
	Revista de Biologia Tropical: International Journal of Tropical Biology and Conservation -- issues from 2000-2005 are freely available onnline; issues from 2006 are available by subscription only or by purchasing single issues; indices from 1953-200 are available online.
Public Library of Science	Public Library of Science -- a non-prfofit organization of sciecntists  and pyhsicians committed to making the world's scientific literature a freely available public resource.  Everything published by PLoS is freely available online.
	PubMed Central -- a free archive of life sciences journals , organized by the U.S. BNational Instititutes of Health.
	FreeFullText.com -- provides links to over 7,000 scholarly periodicals, which allow some or all of their online content to be viewed by anyone with Internet access, for free (though some may require free registration.)
HighWire Press	HighWire Press -- 1,619,648 free full-text articles as of 3/20/07, HighWire Press at Stanford University develops and maintains the Web versions of important journals in biomedicine and other disciplines.  They advertise themselves as the largest archive of free, full-text science on earth.
	Directory of Open Access Journals -- This service covers free, full text, quality controlled scientific and scholarly journals. Coverage includes all subjects and languages. There are now 2603 journals in the directory. Currently 783 journals are searchable at article level.

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