Nuala Calvi Books

"Worn down by years of war and hardship, girls like Sylvia, Margaret, and Gwendolyn were thrilled when American GI's arrived in Britain with their exotic accents, handsome uniforms and aura of Holl...

GI Brides

By Duncan Barrett, Nuala Calvi

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GI Brides June

By Duncan Barrett, Nuala Calvi

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The Sugar Girls

By Duncan Barrett, Nuala Calvi

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Sugar Girls of Love Lane

By Duncan Barrett, Nuala Calvi

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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.