Christopher Locke Books

The Cluetrain Manifesto

By Rick Levine, Doc Searls, Christopher Locke

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Gonzo marketing

By Christopher Locke

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A new marketing approach emphasizes the guerrilla tactics of "Gonzo journalism," arguing that a confrontational, unorthodox, and highly individualized marketing plan is best suited to the current b...

The bombast transcripts

By Christopher Locke

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Gonzo Marketing

By Christopher Locke

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The Bombast Transcripts

By Christopher Locke

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The Cluetrain Manifesto

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The Cluetrain Manifesto

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Gonzo Marketing

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Gonzo Marketing

By Christopher Locke

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How to Burn

By Christopher Locke

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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.