John Friedlander Books

Two of America's most experienced and respected psychic teachers present their system of the subtle energy of interpersonal relationships in a book that will appeal to anyone wishing to understand...

Dark Pool of Light Volume Two

By Kenneth Warren, Richard Grossinger, John Friedlander

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Journey of Your Soul

By John Friedlander, Shepherd Hoodwin Forewords By Jon Klimo

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A fascinating discussion of the Michael teachings—an extraordinary body of channeled work that addresses the fundamental questions of what it means to be human—from an expert Michael ch...

Recentering Seth

By Richard Grossinger, John Friedlander

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Recentering Seth

By Richard Grossinger, John Friedlander

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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.