Catherine Classen Books

Group Therapy For Cancer Patients: A Research-based Handbook Of Psychosocial Care

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"Psychiatrist David Spiegel was the first to demonstrate that group support for cancer patients results in significantly enhanced survival times and in measurably greater quality of life - less anx...

Treating women molested in childhood

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This essential resource book offers clinicians the necessary tools and skills to work effectively with their sexually abused clients. Illuminated by numerous case histories and clinical examples, t...

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.