Massad Ayoob Books

Gun Digest Book of Combat Handgunnery 7th Edition

By Massad Ayoob

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The Gun Digest Book of SIG-Sauer: A Complete Look at SIG-Sauer Pistols

By Massad F. Ayoob, Massad Ayoob

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Gun Digest Book of Beretta Pistols: Function Accuracy Performance

By Massad Ayoob

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As the personal protection arena of the firearms industry continues to grow, resources devoted to choice protective handguns are at a premium. In The Gun Digest Book of Beretta, thorough specificat...

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.