Roger French Books

William Harvey's natural philosophy was a view of the world that he had put together during his education in Cambridge and Padua. It contained ways of structuring knowledge, formulating questions a...

Medicine before Science

By Roger French, R. K. French

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This book offers an introduction to the history of university-trained physicians from the middle ages to the eighteenth-century Enlightenment. These were the elite, in reputation and rewards, and t...

Science in the early Roman Empire

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A New World Of Animals

By MIGUEL DE ASUA, Roger French

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Ancient and Moderns in the Medical Sciences

By Roger K. French, R. K. French

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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.