Leon Wurmser Books

Die zerbrochene Wirklichkeit: Psychoanalyse als das Studium von Konflikt und Komplementaritat

By Leon Wurmser

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The Power of the Inner Judge

By Lzon Wurmser, Leon Wurmser

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"This book describes in detail how to effectively treat severely ill but not psychotic patients, by careful psychotherapeutic work on the defenses and the superego. Diverging widely from Kernberg's...

Flight from Conscience

By Leon Wurmser

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Torment Me But Don t Abandon Me

By Leon Wurmser

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The mask of shame

By Leon Wurmser

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The hidden dimension

By Leon Wurmser

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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.