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Download from Official Microsoft Download Center
Internet Explorer 9 - Download
Internet Explorer 9 - Wikipedia
Internet Explorer Downloads - Microsoft Support
IE9 FAQ: how to install, uninstall, and tweak the final release
How to solve Internet Explorer 9 installation issues - Browsers
Internet Explorer 9 Released: Here’s What You Need To Know
Manually install prerequisites of Internet Explorer 9 - Browsers
Windows Internet Explorer 9 New Features at a Glance
IE9 FAQ: how to install, uninstall, and tweak the IE9 RC