Page History

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1. Web of Science and Knowledge (a subscription database paid for by Drew)
   1. Drew's Summon service, which incorporates citation counts/searching from the Web of Science
2. Google Scholar (a free web search engine for searching scholarly materials online)
3. CiteSeerx at Penn State University
4. Subject and journal databases:
   1. PsycInfo
   2. Biosis/Medline
   3. JSTOR
   4. MathSciNet
   5. ScienceDirect