Diane Zahler Books

The Thirteenth Princess

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Zita, cast aside by her father and raised as a kitchen maid, learns when she is nearly twelve that she is a princess and that her twelve sisters love her, and so when she discovers they are victims...

Sleeping Beauty's Daughters

By Diane Zahler

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"Twelve-year-old Princess Aurora has been cursed to prick her finger and sleep for one hundred years, but before her fate can come to pass, she and her sister Luna embark on a perilous journey to f...

Sleeping Beauty's daughters

By Diane Zahler

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McGraw-Hill Education TASC: The Official Guide to the Test

By Kathy A. Zahler

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Prepare for the TASC exam and includes authentic TASC questions with explanations, full-length practice TASC exams and review in all five subject areas.

Test your cultural literacy

By Diane Zahler

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Test Your Countercultural Literacy

By Kathy A. Zahler

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What Do You Know About Sex?

By Kathy A. Zahler, Diane Zahler

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21st century guide to improving your writing

By Diane Zahler

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Test Your Cultural Literacy 2E Test Your Cultural Literacy

By Diane Zahler, Arco

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For My Teacher

By Diane Zahler

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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.