Houghton Mifflin Harcourt
Houghton Mifflin Harcourt is a Boston-based company founded in 1832 by Henry Oscar Houghton.
| Name | Phone | Social networks | |
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| He*** Os*** Ho****** | - | - | - |
Industries
Houghton Mifflin Harcourt is active in the following industries:
Subsidiaries
Houghton Mifflin Harcourt operates through the following subsidiaries: