ANN ARBOR, Mich., June 20, 2007 - ProQuest today announced the expansion of Periodicals Index Online (PIO), the leading index for periodicals in the arts, humanities, and social sciences. The latest content update to PIO added indexing for 176 titles, bringing the total to 5, 255 titles spanning from 1665 to 1995. Customers can now search over 16 million articles in 40 languages and dialects across a wide range of disciplines.

"No other index covers as many disciplines, is as broadly international in scope, or features as many languages as Periodicals Index Online," said Mary Sauer-Games, vice president of publishing at ProQuest.  "This new expanded version provides users with an even larger array of citations that lead to full text and a single access point for researching three centuries of content." 

PIO indexes renowned scholarly journals, as well as primary source periodicals, with 200 journals added each year.  It is also a useful aid to locate articles in a library's print, microform, or  digital collections.  PIO includes such robust features as: quick search; post-search sorting and filtering; browse capability by title, subject, or language, and advanced search capabilities.

Recently, Charleston Advisor reviewed PIO, giving it a perfect score in both content and contract provisions, saying, "…for those familiar with the earlier incarnation of PIO/PAO, Periodical Contents Index Full Text, the new interface will be a revelation. ProQuest invested in extensive usability testing and made major improvements to the new interface."

This new content is now available. For more information about PIO, visit the company at www.proquest.com or call 1-800-521-0600.

About ProQuest
ProQuest creates specialized information resources and technologies that propel successful research, discovery, and lifelong learning. A global leader in serving libraries of all types, ProQuest offers the expertise of such respected brands as Chadwyck-Healey™, UMI®, SIRS®, and eLibrary®. With Serials Solutions®, Ulrich's™, RefWorks®, COS™, Dialog® and now Bowker® part of the ProQuest brand family, the company supports the breadth of the information community with innovative discovery solutions that power the business of books and the best in research experience.

More than a content provider or aggregator, ProQuest is an information partner, creating indispensable research solutions that connect people and information. Through innovative, user-centered discovery technology, ProQuest offers billions of pages of global content that includes historical newspapers, dissertations, and uniquely relevant resources for researchers of any age and sophistication—including content not likely to be digitized by others. Inspired by its customers and their end users, ProQuest is working toward a future that blends information accessibility with community to further enhance learning and encourage lifelong enrichment.

For more information, visit www.proquest.com or the ProQuest parent company website, www.cig.com.