Claudia Boldt Books

When his father challenges him to catch a chicken, Harold, who hates eating chicken, finds his life more complicated after he is wrongly accused of being the head of a chicken-smuggling operation.

The mystery of the missing cake

By Claudia Boldt

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When Harold the fox is invited to a costume birthday party, he and his friends come up with fantastic outfits. The party starts off really well but when the birthday boy s cake is stolen during a g...

Mystery of the Missing Cake

By Claudia Boldt

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Dance Like a Flamingo

By Claudia Boldt, Moira Butterfield

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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.