According to the EBSCO site:

"The Most Comprehensive Index of Science, Technical, Medical and Business Content for Prior Art Literature, Available All in One Place.

This innovative product makes it easy to search non-patent literature for prior art. It provides a comprehensive, highly-relevant index of non-patent literature with links to millions of full-text articles and extensive backfiles dating as far back as 1885.

Non-Patent Prior Art Source is ideal for:

Intellectual property managers,Patent attorneys, Patent examiners

A Robust Index of Prior Art For Defending Intellectual Property

The content is organized in a manner that makes it fast and easy to find prior art and allows users to locate exactly what they are looking for regardless of how it appears in literature. Non-Patent Prior Art Source helps intellectual property managers ensure potential patents are novel, for defending intellectual property and increasing application approval."

Be interested to know if anyone finds it useful.

http://ebscohost.com/corporate-research/non-patent-prior-art-source