Andrew Postman Books

Chasing Daylight: How My Forthcoming Death Transformed My Life

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An honest and inspirational look at one man's struggle against illness to understand the significance of his work and to close the relationships of his life. The author was one of the most respecte...

Using Hal: A Guide to Achieving Greater Productivity With Lotus 1-2-3's Companion Product

By Andrew Postman

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Now I know everything

By Andrew Postman

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Now I know everything

By Andrew Postman

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The ultimate book of sports lists

By Andrew Postman

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What's in an age?

By Andrew Postman

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What s In An Age

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The Ultimate Book of Sports Lists

By Larry Stone, Andrew Postman

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Under My Helmet

By Tony Dungy, Keith O Neil, Andrew Postman

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Under My Helmet

By Tony Dungy, Keith O Neil, Andrew Postman

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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.