If you have a valid license for 2011 but need the installer, you can sometimes obtain download links by contacting Autodesk Customer Care .
Unofficial versions do not receive critical security patches or service packs (like SP1 or SP2), leaving your work at risk of crashes and data loss. autocad civil 3d 2011 64 bits torrent 39
This version was optimized to take full advantage of 64-bit operating systems, allowing for larger datasets and faster rendering compared to the 32-bit counterpart. Technical Specifications (64-Bit) If you have a valid license for 2011