Marcus Gray Books

Route 19 Revisited: The Clash and London Calling

By Marcus Gray

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Route 19 revisited

By Marcus Gray

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Presents an analysis of the album "Route 19," including stories about each song, how the cover was created, and the legacy of the album within the music industry.

The Clash

By The Clash, Marcus Gray

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The Clash

By The Clash, Marcus Gray

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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.