Edward I. Koch Books

Eddie s Little Sister Makes a Splash

By Pat Koch Thaler, Edward I. Koch

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Politics

By Ed Koch, William Rauch

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ALL THE BEST: My Life in Letters and Other Writings

By Ed Koch, Edward I. Koch

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Buzz

By Ed Koch, Christy Heady, Edward I. Koch

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Mayor an Autobiography Edward I. Koch Cassette

By Ed Koch

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ALL THE BEST

By Edward I. Koch

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Giuliani

By Edward I. Koch

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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.