Cally Oldershaw Books

An Anthology of Our Extraordinary Earth

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Explore the beauty and majesty of planet Earth in this compendium, with more than 100 incredible stories and images.The world is so much more complex than young minds can fathom, from molten-hot ro...

Deserts And Wastelands Closer Look at

By Cally Oldershaw

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Gemstones

By Cally Oldershaw, Christine Woodward, Roger Harding

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Gems of the World

By Cally Oldershaw

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DK Children s Anthologies 6 Books Set

By Cally Oldershaw

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Stones

By Cally Oldershaw

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Stones

By Cally Oldershaw

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Guia de Las Piedras Preciosas

By Cally Oldershaw

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3D Rocas y Minerales

By Cally Oldershaw

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Maravillas del Planeta Tierra (An Anthology of Our Extraordinary Earth)

By Cally Oldershaw

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Explora la belleza del planeta Tierra a través de más de 100 historias acompañadas de increíbles imágenes y fotografías.Maravillas del planeta Tierra es un libro de geología que explica de manera f...

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.