William Rosen Books

Miracle Cure

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The epic history of how antibiotics were born, saving millions of lives and creating a vast new industry known as Big Pharma.As late as the 1930s, virtually no drug intended for sickness did any go...

Miracle Cure

By William Rosen

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Justinian's Flea

By William Rosen

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From the acclaimed author of Miracle Cure and The Third Horseman, the epic story of the collision between one of nature's smallest organisms and history's mightiest empire During the golden age of...

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.