Robert L. Goulding Books

Not to worry!

By Mary McClure Goulding

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Changing lives through redecision therapy

By Mary McClure Goulding

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Redecision Therapy is based on the premise that, through goal-setting and the reenactment of important childhood scenes, we may change our future and gain control of our lives. This revised and upd...

Changing lives through redecision therapy

By Mary McClure Goulding

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The power is in the patient

By Robert L. Goulding

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Neuentscheidung. Ein Modell der Psychotherapie.

By Robert L. Goulding, Mary McClure Goulding

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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.