Claudia Trupp Books

Hard time with Peter Rabbit

By Claudia Trupp

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Hard Times Nursery Rhymes

By Claudia Trupp

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Ethnotourismus

By Alexander Trupp, Claudia Trupp

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Hard Time & Nursery Rhymes

By Claudia Trupp

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What kind of woman leaves three young daughters at home every morning to spend her days representing convicted murderers and rapists? That is the question criminal defense attorney Claudia Trupp co...

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.