Patrick Harpur Books

Daimonic reality

By Patrick Harpur

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Mercurius

By Patrick Harpur

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The philosophers' secret fire

By Patrick Harpur

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Mercurius

By Patrick Harpur

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The Good People

By Patrick Harpur

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Two women see something uncanny in the skies over west London in the summer of 1989.It's the summer of 1989, a time of global flux just before the collapse of the Berlin wall and of South Africa's...

Realidad daimonica

By Patrick Harpur, Isabel Margeli

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Mercurius

By Magdalena Palmer Molera, Patrick Harpur

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La tradicion oculta del alma 2a edicion

By Isabel Margeli Bailo, Patrick Harpur

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El fuego secreto de los filosofos. 2a edicion

By Fernando Almansa, Patrick Harpur

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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.