أفضل ثماني محركات بحث موثوقة ومجانية للبحوث العلمية والأكاديمية
1. Google Scholar
scholar.google.com
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2. CiteSeerx
citeseerx.ist.psu.edu
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3. GetCITED
www.getcited.org
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4. Microsoft Academic Research
academic.research.microsoft.com
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5. Bioline International
www.bioline.org.br
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6. Directory of Open Access Journals
www.doaj.org
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7. PLOS ONE
www.plosone.org
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8. BioOne
www.bioone.org
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المصدر
1. Google Scholar
scholar.google.com
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2. CiteSeerx
citeseerx.ist.psu.edu
--------------------------------------------------------
3. GetCITED
www.getcited.org
--------------------------------------------------------
4. Microsoft Academic Research
academic.research.microsoft.com
--------------------------------------------------------
5. Bioline International
www.bioline.org.br
--------------------------------------------------------
6. Directory of Open Access Journals
www.doaj.org
--------------------------------------------------------
7. PLOS ONE
www.plosone.org
--------------------------------------------------------
8. BioOne
www.bioone.org
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المصدر