Christopher Knowles Books

Cotswolds

By Christopher Knowles

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The secret history of rock n roll

By Christopher Knowles

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"...tells the story of the Mysteries [e.g. Mystery religions]--their rise, fall and eventual rebirth in the New World, where rhythms and melodies from the West African and the Celtic diasporas coll...

Our Gods Wear Spandex

By Christopher Knowles, Chris Knowles

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Bad Side of Good

By Christopher Knowles

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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.