SUBJECTS	SOURCE(SITES)	LINKS
Argricultural	AGRIS by FAO	www.agris.fao.org
Computer Science	Semantic Scholar	www.semanticscholar.org
Economics	Research Papers in Economics (RePEC)	www.repec.org
Economics	EconBIZ	www.econbiz.de
Economics	National bureau fo Economic Research (ERIC)	www.nber.org
Economics	Educational Resource Information Center (ERIC)	www.eric.ed.gov
Humanities	Open Editionf	www.openedition.org
Journals	Directory fo Open Access Journals (DOAJ)	www.doaj.org
Linguistics	Lingbuzz	www.lingbuzz.auf.net
Mathematics-Physics-Science	Scientillion	www.scientillion.com
Mathematics-Physics-Science (arXiv)	Cornell University	www.arxiv.org
Multidisciplinary	Bielefeld Academic Search Engine (BASE)	www.base-search.net
Multidisciplinary	Google Scholar	www.scholar.google.com
Multidisciplinary	Microsoft Academic Search	www.academic.research.microsoft.com
Multidisciplinary	Open Access Journals (JURN)	www.jurn.org
Multidisciplinary	World wide Science	www.worldwidescience.org
Multidisciplinary	Search Team	www.searchteam.com
Multidisciplinary	Science	www.science.gov
Philosophy	PhilPapers	www.philpaper.org
Science	Science Open Source	www.scieneopen.com
Science	Scientific Electronic Library Online (Scielo)	www.scielo.org
Search Engine	Wikipedia	www.en.wikipedia.org
Social Science	Social Science Research Net	www.ssrn.com