John Bowker Books

Licensed Insanities: Religions and Belief in God in the Contemporary World

By John Westerdale Bowker

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Is God a Virus?: Genes, Culture and Religion

By John Westerdale Bowker

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The Message and the Book: Sacred Texts of the World's Religions

By John Bowker

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This survey of the sacred writings of the major religions of the world offers an introduction to the ideas and beliefs upon which great faiths are built. Under the expert guidance of the author, a...

The Message and the Book: Sacred Texts of the World's Religions

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Problems of Suffering in Religions of the World

By John Bowker, John Westerdale Bowker

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Problems of Suffering in Religions of the World

By John Bowker

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Jesus and the Pharisees

By John Bowker, John Westerdale Bowker

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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.