Robert J. Hedaya Books

The Antidepressant Survival Program

By Robert J. Hedaya, Robert J. Md Hedaya

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The Antidepressant Survival Guide: The Clinically Proven Program to Enhance the Benefits and Beat the Side Effects of Your Medication

By Robert J. Hedaya

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Textbook of Functional Medicine

By Jeffrey S. Bland, Sidney MacDonald Baker, Alex Vasquez, Mark Hyman, Peter Bennett, Jay Lombard, Robert Rountree, Robert J. Hedaya, Leo Galland, Mark Houston

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Understanding Biological Psychiatry

By Robert J. Hedaya, Hedaya Robert

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The Antidepressant Survival Guide

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"Now patients can have the best of both worlds—freedom from depression and freedom from side effects. Dr. Robert Hedaya offers a wealth of wisdom drawn from years of clinical experience, resear...

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.