Helen Greathead Books

Clothes and Shoes Design and Make

By Helen Greathead

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Paris city trails

By Helen Greathead

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Here's a book about Paris that's seriously streetwise. Discover secrets and stories guaranteed to blow your mind that are definitely off the tourist trail. Find out where you can ride a dodo, how t...

Sydney city trails

By Helen Greathead

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Here's a book about Sydney that's seriously streetwise. Colorful themed trails, from history and culture to food and nature, reveal amazing facts and intriguing tales that kids won't find on the to...

Spooky Devon

By Helen Greathead

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Six ghost stories set in and around Devon with additional jokes and facts.

My chocolate bar and other foods

By Helen Greathead

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Sharks

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How To Be Clever Smart Ways To Get Smarter

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Wicked Wildlife

By Helen Greathead

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Wicked wildlife

By Helen Greathead

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Would you swim with alligators or piranha? Would you fight a bear or a giant squid? These diabolical situations and more will have you running for cover as you plunge into a series of fiendish ques...

Super Sports

By Helen Greathead

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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.