Mark Wolynn Books

It s Not Always Depression

By Hilary Jacobs Hendel

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It Didn't Start with You

By Mark Wolynn

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A groundbreaking approach to transforming traumatic legacies passed down in families over generations, by an acclaimed expert in the field   Depression. Anxiety. Chronic Pain. Phobias. Obsessi...

It Didn't Start With You

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A groundbreaking approach to transforming traumatic legacies passed down in families over generations, by an acclaimed expert in the field Depression. Anxiety. Chronic Pain. Phobias. Obsessive th...

The Official It Didn't Start with You Workbook

By Mark Wolynn

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The must-have companion to the million-copy bestseller, a comprehensive guide to understanding and transforming the impact of traumatic family legacies on our daily livesDepression. Anxiety. Chroni...

The Official It Didn't Start with You Workbook

By Mark Wolynn

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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.