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Customer Service
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General Information
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Shipping and Returns
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Product Evaluation
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Online Store Accounts
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Sales Tax
Prices do not include sales tax. Applicable sales tax, if any, will be added to the invoice unless an appropriate tax exemption certificate has been furnished to Houghton Mifflin Harcourt.
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Sales Tax
Prices do not include sales tax. Applicable sales tax, if any, will be added to the invoice unless an appropriate tax exemption certificate has been furnished to Houghton Mifflin Harcourt.