CD-ROM Technical Support Form

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This is the number starting with 1 or M that appears on the CD-ROM. It allows us to identify the product fully and provide the promptest possible resolution.


Please enter ISBN/EAN here if your product does not have a title code.





If your question is regarding product information or order status, please call Customer Service at 800-225-5425.


Houghton Mifflin Harcourt