Melanie Killen Books

"Edited by two leading scholars, Social Development in Childhood and Adolescence brings together the most significant classic and contemporary writings in this area to provide a comprehensive overv...

Social development in childhood and adolescence

By Melanie Killen, Robert J. Coplan

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Piaget Evolution and Development

By Melanie Killen, Jonas Langer

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Children and Social Exclusion

By Melanie Killen, Adam Rutland

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Children and Social Exclusion

By Melanie Killen, Adam Rutland

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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.