Charles E Schaefer Books

How to influence children

By Charles E. Schaefer

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How to influence children

By Charles E. Schaefer

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How to Help Children with Common Problems

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From early childhood through adolescence—a uniquely practical, reassuring, and effective parenting guide. Even normal, well-adjusted children manifest difficult behavior. At times they can be dis...

Fundamentos de terapia de juego 2. ed.

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Ayude a Su Hijo a Superarse En El Colegio

By Di Geronimo Schaefer

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Play therapy and family therapy are both well-established therapeutic paradigms. Often, however, play therapists have minimal contact with the nuclear family of which their child patient is a membe...

Clinical handbook of anxiety disorders in children and adolescents

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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.