David J. Leigh Books

Apocalyptic patterns in twentieth century fiction

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"David J. Leigh explores the innovative influences of the book of Revelation and ideas of an end time on fiction of the twentieth century, and probes philosophical, political, and theological issue...

Circuitous Journeys

By David Leigh, David J. Leigh

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"Circuitous Journeys: Modern Spiritual Autobiography provides a close reading and analysis of ten major life stories by twentieth-century leaders, thinkers, and activists from a variety of religiou...

Circuitous Journeys

By David Leigh

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Authentic lives, profound journeys

By David J. Leigh

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Visual programming

By David J. Leigh

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Apocalyptic Patterns in Twentieth Century Fiction

By David Leigh

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Circuitous Journeys

By David J. Leigh

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Circuitous Journeys

By David Leigh

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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.