John Holland Books

Psychic Navigator

By John Holland, Holland John

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101 Ways to Jump Start Your Intuition

By John Holland

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Power of the Soul

By John Holland, Holland John

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Power of the Soul

By John Holland

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This fascinating book gives you the tools to help tap into one of the most powerful forces in the Universe—YOUR SOUL. Power of the Soul is a step-by-step guide to help you reconnect...

The 65 beautifully illustrated cards in this deck will create a powerful bridge between your psychic abilities and the ancient knowledge and meanings of the tarot. It will help you develop intuitiv...

Psychic Navigator

By John Holland

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Bridging Two Realms

By John Holland

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There could be many reasons why you’re drawn to this book — or perhaps synchronicity had a part to play in that this book somehow found you! Are you looking for answers as to what happe...

The Nature of Music

By John Holland

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Studies On The Human Ear

By John Holland

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The Five Minute MBA

By John Holland

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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.