Ann D. Koffsky Books

My Cousin Tamar Lives in Israel BOARDBOOK

By Ann D. Koffsky, Michelle Shapiro Abraham

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Noah s swim a thon

By Ann D. Koffsky

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Noah prefers kickball to swimming at Jewish camp until the camp director holds a swim-a-thon to raise money for the "Help Kids Get to Camp" tzedakah fund.

Make This Journal My Bar Bat Mitzvah Year

By Behrman House

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Kayla and Kugel

By Ann D. Koffsky

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Frogs in the Bed

By Behrman House

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My Jewish Counting Book

By Ann D. Koffsky

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Shabbat Shalom Hey

By Ann D. Koffsky

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Shabbat Shalom Hey

By Ann D. Koffsky

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Ping Pong Shabbat

By Abigail Rajunov, Ann D. Koffsky

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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.