Grey Literature Definition 
 "Information produced on all levels of government, academia, business and industry in electronic and print formats NOT controlled by commercial publishing i.e., where publishing is not the primary activity of the producing body"  - ICGL Luxembourg definition, 1997- Expanded in New York, 2004

Types of Grey Literature

Where to Find Grey Literature

Grey Literature Resources

Grey Literature: What is it?!: National Libraries of Medicine.(59:23 min)

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