Hierarchy: Houghton Mifflin Harcourt Learning Technology, Inc., Houghton Mifflin Harcourt

Houghton Mifflin Harcourt Learning Technology, Inc. and Houghton Mifflin Harcourt have a hierarchical relationship

Parent company Houghton Mifflin Harcourt Learning Technology, Inc.
Subsidiary Houghton Mifflin Harcourt
Is Current yes
Updated over 11 years ago

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