Jonathan D. Rosen Books

"The war on drugs led by the United States has failed: drugs remain purer, cheaper and more readily available than when the war on drugs began in 1971. The drug war has also resulted in extreme lev...

New Approaches to Drug Policies

By Jonathan D. Rosen, Marten W. Brienen

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Henry James s Portrait of the Writer As Hero

By Jonathan D. Rosen, Sara S. Chapman

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Losing War The

By Jonathan Rosen Undifferentiated

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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.