Kathleen O Brien Books

Christmas In Hawthorn Bay

By Kathleen O Brien

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Texas baby

By Kathleen O Brien

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Texas trouble

By Kathleen O Brien

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Although Logan Cathcart is attracted to wealthy widow Nora Archer from the moment they meet, socially they are leagues apart. Keeping his distance is next to impossible, though, when Nora is consta...

For Their Baby

By Kathleen O Brien

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Firefly Glen

By Kathleen O Brien

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Quiet As The Grave

By Kathleen O Brien

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Harlequin Presents November 1994

By Kathleen O Brien, Silhouette, Lynne Graham

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The Northwest Green Home Primer

By Kathleen O Brien, Kathleen Smith

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Colorado Ski Industry

By Kathleen O Brien

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Colorado Travel and Tourism Statistics 1986

By Kathleen O Brien

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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.