iMac and iBook: World Book Encyclopedia Serial Number

When trying to install the World Book Encyclopedia software that came with my new computer, the installer tells me to type in the serial number, and states that the serial number is located on the back of the package that the CDs came in. Where can I find this serial number?
Note: This issue does not apply to Rev. A or Rev. B iMac computers.

During the installation for the World Book Encyclopedia software, the installer program will pause for you to enter the 12-character CD-Key code. The regular instructions ask the user to look for the CD-Key code on the back of the disc holder containing the World Book discs.

For the iMac bundled version, the CD-Key code may be on the back of the "World Book Macintosh QuickStart" card that comes inside the accessory kit box of your iMac, or on a label affixed to the CD sleeve itself.

Input all the letters and numbers without hyphens or spaces; capitalize all letters.

If you experience problems installing or using World Book * Macintosh Edition, first consult the Read Me file located in the World Book folder on the hard disk; and then if necessary visit World Book's Web site, which can be found at this address:

http://www.worldbook.com
Published Date: Feb 20, 2012