Michael John Simmons Books

2 000 guitars

By Paul Day, Jerry Uwins, Wright Michael Writer, Richard Johnston, Walter Carter, Tony Bacon, John Morrish, Jansson Mikael Bassist, Michael John Simmons, Dave Hunter, Ben Elder, Dave Burrluck, Teja Gerken

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Featured instruments are arranged alphabetically by maker/manufacturer for easy access. For convenient browsing, sections are further organized by subdivisions, including solid-bodied guitars, semi...

Boutique Acoustics

By Michael John Simmons

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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.