Penny Clarke Books

The story of explorers and exploration

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What are mummies? How, why, and where were they made, and who made them? Embalmed, frozen, buried in bogs, or dried by desert winds, corpses from the past tell their own story... a very creepy hist...

Taking the plunge

By Penny Clarke

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Glorious Treasures the Celts

By Karen Sullivan

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Big cats

By Penny Clarke

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Describes different species of big cats, how they look, and how they behave.

Big cats

By Penny Clarke

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Describes different species of big cats, how they look, and how they behave.

Spiders and Minibeasts Scary Creatures

By Penny Clarke

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Spiders and Minibeasts Scary Creatures

By Penny Clarke

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Timelines Brain Power

By Penny Clarke

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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.