Mary Downing Hahn Books

Daphne's book

By Mary Downing Hahn

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Jellyfish season

By Mary Downing Hahn

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Sara Summer The

By Mary Downing Hahn

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Sara Summer The

By Mary Downing Hahn

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Daphne s book

By Mary Downing Hahn

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As author Jessica and artist Daphne collaborate on a picture book for a seventh-grade English class contest, Jessica becomes aware of conditions in Daphne's home life that seem to threaten her heal...

Stepping on the Cracks

By Mary Downing Hahn

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Following the Mystery Man

By Mary Downing Hahn

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Look for Me by Moonlight

By Mary Downing Hahn

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The Gentleman Outlaw and Me Eli

By Mary Downing Hahn

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All The Lovely Bad Ones Turtleback School Library Binding Edition

By Mary Downing Hahn

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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.