Helen Delaney Books

Clifford s puppy days

By Helen Delaney

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Clifford and Emily Elizabeth go on his big Saturday walk.

Sois Prudent Clifford

By Helen Delaney, Steve Haefele

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The messenger

By Helen Delaney

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"Helen Delaney is in a railway book store, inconsolable and suicidal after the death of her son. A book at eye level catches her attention. She touches it, and it falls off the shelf, into her hand...

Internet Guide to EU Standards and Conformity Assessment

By Helen Delaney

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Another London

By Ben Gidley, Simon Baker, Tate Britain Gallery Staff, Mick Gidley, Helen Delaney

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Mike Nelson the Coral Reef

By Mike Nelson, Helen Delaney

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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.