ProQuest® will be performing infrastructure maintenance on Saturday, June 30, 2012. A twelve (12) hour maintenance window will be required for this maintenance to install the latest enhancements to the ProQuest platform. The window will take place from Saturday, June 30, 2012, at 9:00 PM PST to Sunday, July 1, 2012 at 7:00 AM PST All ProQuest databases will be offline during this time-period.