Mark Lewisohn Books

Tune in, the first volume of a biographical trilogy by Beatles historian Mark Lewisohn, takes the Beatles from before their childhoods through the final hour of 1962--when, with breakthrough succes...

Tune In

By Mark Lewisohn

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Now in paperback, Tune In is the New York Times bestseller by the world’s leading Beatles authority – the first volume in a groundbreaking trilogy about the band that revolutionized mus...

The Complete Beatles Recording Sessions

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The Beatles London A Guide to 467 Beatles Sites in and Around London

By Adam Smith, Mark Lewisohn, Piet Schreuders

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The Complete Beatles Chronicle The Definitive Day by Day Guide to the Beatles Entire Career

By Mark Lewisohn

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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.