John Lennon Books

Skywriting by Word of Mouth

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A collection of writings and drawings including "Two Virgins;" notes on falling in love with Yoko; the breakup of the Beatles; persecution by U.S. authorities; and his withdrawal from public life.

Skywriting by Word of Mouth: And Other Writings, Including The Ballad of John and Yoko

By John Lennon

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Benchmarking National Tourism Organisations and Agencies: Understanding Best Performance

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John Lennon

By Wulf Herzogenrath

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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.