Nancy Hellen Books

Let s Go Out A Magic Wheel Book

By Nancy Hellen

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My Magic House A Magic Wheel Book

By Nancy Hellen

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Old MacDonald had a farm

By Nancy Hellen

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The inhabitants of Old MacDonald's farm are described, verse by verse. On board pages with die cuts to reveal the animals.

Incy Wincy Dot to Dot Colouring Book First Activity

By Nancy Hellen

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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.