David H. Johnson Books

'Reaching Out' provides the theory and experience necessary for students to develop effective interpersonal skills. Readers acquire the skills and knowledge to do the following: a) get to know and...

Joining Together: Group Theory and Group Skills

By David W. Johnson

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"This text introduces readers to the theory and research findings needed to understand how to make groups effective, and it helps build the skills required to apply that knowledge in practical situ...

Reaching Out: Interpersonal Effectiveness and Self-Actualization

By David W. Johnson

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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.