Donnalynn Hess Books

Father s Promise

By Donna Lynn Hess

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Fundamentals of Literature Teacher Book Grade 9

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In Search of Honor

By Donnalynn Hess, Donna L. Hess

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Fourteen-year-old Jacques Chénier is drawn into the tumult of the French Revolution as he struggles to free himself from the prison of his own bitterness and find the true meaning of honor.

Excursions in Literature

By Donna L. Hess

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This book is a collection of essays, short stories, poems, plays, and excerpts from longer works expressing Christian themes and values. Also includes passages from the Bible. Students will read li...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.