Joan Lennon Books

Questors

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Three confused children are brought together then, with little training, sent off to save three worlds that were held in perfect balance until a cataclysmic disruption in the space-time continuum t...

The seventh tide

By Joan Lennon

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The Bad tempered Dragon Young Hippo Magic S.

By Joan Lennon

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There's a kangaroo in my soup!

By Joan Lennon

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When Cynthia the boisterous kangaroo runs away from the circus, she hides out at quiet Kevin's house and helps him solve the mystery surrounding his parents' inventions.

Planet hell

By Joan Lennon

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Questors

By Joan Lennon

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Leif Frond and the Viking Games

By Joan Lennon

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Silver Skin

By Joan Lennon

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Walking Mountain

By Joan Lennon

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278 pages, 2 unnumbered leaves of plates : 20 cm

The night of the kelpies

By Joan Lennon

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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.