John Farndon Books

Biggest Ever Book of Questions Answers Children s Reference

By John Fardon

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The big book of knowledge

By John Farndon

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What do we know about stars and galaxies?

By John Farndon

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This book shows that what we can see in the sky is just a tiny part of the Universe. It explains what stars are, and how the billions of star clusters and galaxies are organized like an immense spi...

What do we know about stars and galaxies

By John Farndon

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Atlas of Oceans: A Fascinating Hidden World

By John Farndon

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Atlas of oceans

By John Farndon

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Oil

By John Farndon

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Stems

By John Farndon

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Roots

By John Farndon

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Explains what plant roots are, their function, how they grow, kinds of roots, and their relationship with animals and people.

World of Plants Leaves World of Plants

By John Farndon

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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.