Ian Hoffman Books

A Convenient Spy

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"No espionage case in recent decades has been anything like the Wen Ho Lee affair. As Dan Stober and Ian Hoffman describe in A Convenient Spy, an astonishingly inept investigation of a crime that m...

Jacob s New Dress

By Ian Hoffman, Sarah Hoffman

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Jacob s New Dress

By Ian Hoffman, Chris Case, Sarah Hoffman

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Halls for Music Performance

By Ian Hoffman, Christopher Storch, Timothy J. Foulkes

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A Convenient Spy

By Ian Hoffman, Dan Stober

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Jacob s Room to Choose

By Ian Hoffman, Sarah Hoffman

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Jacob s New Dress

By Ian Hoffman, Sarah Hoffman

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Jacob s School Play

By Ian Hoffman, Chris Case, Sarah Hoffman

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Jacobs Missing Book

By Ian Hoffman, Chris Case, Sarah Hoffman

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Jacob s New Dress

By Ian Hoffman, Chris Case, Sarah Hoffman

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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.