Catherine Day Books

DK Eyewitness Travel Guide Barcelona and Catalonia

By Catherine Day

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Shared Heart Journal

By Catherine Day

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Spain

By John Ardagh, Stephen Conlin, Nick Inman, Jaki Grosvenor, Janis Utton, Catherine Day, Max Alexander

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The key to planning an ideal vacation in one of Europe's most popular locations. It's the only genuine all-in-one guide that provides detailed information on sights, history, entertainment, shoppin...

Course and Training Notes

By Catherine Day

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Christmas Coloring Book

By Catherine Day

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Wondering Wanderings of Marmaduke Mogg

By Catherine Day, Duncan Wherrett

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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.