Charles Schaefer Books

101 Favorite Play Therapy Techniques Child Therapy Series

By Kaduson Heidi

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International Handbook of Play Therapy

By Schaefer Charles

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Refusal to Speak

By Spasaro Sheila

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Selective mutism in children is characterized by persistent refusal to speak in one or more social situations (e.g., at school or among strangers), notwithstanding the demonstrated ability to use l...

Helping parents solve their children's behavior problems

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A growing body of evidence supports the cost-effective contention that parents can be trained to participate in resolving their children's behavior problems by applying individualized techniques ba...

101 More Favorite Play Therapy Techniques Child Therapy Series

By Heidi Schaefer Charles Kaduson

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101 Favorite Play Therapy Techniques Vol. 3

By Charles E. Schaefer, Kaduson Heidi, Heidi Kaduson

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Star of the Sun

By Charles Schaefer

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The Quotable Play Therapist

By Charles Schaefer

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How to help children with common problems

By Charles E. Schaefer

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The Ethiopian red terror trials

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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.