Deborah Harkness Books

All Souls Trilogy Boxed Set

By Deborah E. Harkness

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A Discovery of Witches (Movie Tie-In)

By Deborah E. Harkness

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Book one of the New York Times bestselling All Souls series, from the author of The Black Bird Oracle.Look for the hit series “A Discovery of Witches,” now streaming on Netflix“A wonderfully imagin...

Time s Convert

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A Discovery of Witches

By Deborah Harkness

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Shadow of Night

By Deborah E. Harkness

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The World of All Souls

By Deborah E. Harkness, Deborah Harkness

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From the author of The Black Bird Oracle comes a fully illustrated guide to the #1 New York Times bestselling All Souls series—“an irresistible . . . wonderfully imaginative grown-up fa...

A discovery of witches

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A Discovery of Witches

By Deborah E. Harkness

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Shadow of Night

By Deborah E. Harkness

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Shadow of Night

By Deborah E. Harkness

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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.