ProQuest

ProQuest is a company that sells online subscriptions to libraries for access to research materials. Users with a connection to an academic library can obtain documents online.

The UMI microfilm vault was founded in 1938 and now one of ProQuest Information and Learning's assets. It is the largest commercially available microform collection in the world. Its 5.5 billion page images deliver 500 years of information, drawn from thousands of literary, journalistic, and scholarly works. Every year it adds another 37 million images of contemporary information.

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• K12 services
• index tro 2.3 million dissertations