John Halperin Books

A USEFUL REFERENCE GUIDE FOR THOSE WHO SEEK AN EXPEDITIONS MEANS OF INFORMING THEMSELVES AVOUT DATES, PLOTS, OR CHARACTERS IN CONNECTION WITH THE WORKS OF ANY OR ALL OF OUR FIVE WRITERS; ANNE BRONT...

Jane Austen's lovers

By John Halperin

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Novelists in their youth

By John Halperin

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C.P. Snow

By C. P. Snow, John Halperin, Pamela Hansford Johnson

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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.