Paul Marshall Allen Books

Francis of Assisi's canticle of the creatures

By Paul Marshall Allen

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Fingal's Cave, the poems of Ossian, and Celtic Christianity

By Paul Marshall Allen

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On the isolated island of Staffa, next to Iona in Scotland, stands one of the natural wonders of the world. Fingal's Cavean extraordinary Cathedral-like space, with sides and roof of hexagonal basa...

Vladimir Soloviev, Russian mystic

By Paul Marshall Allen

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Vladimir Soloviev, Russian mystic

By Paul Marshall Allen

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A Christian Rosenkreutz Anthology

By Paul M. Compiled And Edited By Allen

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Francis of Assisi's Canticle of the creatures

By Paul Marshall Allen

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The time is at hand!

By Paul Marshall Allen

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Education As an Art

By Rudolf Steiner

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Vladimir Soloviev

By Paul Marshall Allen

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Notes on the Gospel of John

By Paul Marshall Allen

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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.