John Morrill Bryan Books

"Author John M. Bryan and photographer Robert C. Lautman capture Duke's campus as it has evolved over three-quarters of a century. The guide reveals much about the academic aspirations and educatio...

Robert Mills

By John Morrill Bryan

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"The first architect trained in America, Robert Mills (1781-1855) is best known as the designer of many iconic buildings in our nation's capital: the Washington Monument, the Department of Treasury...

Maine Cottages

By John Morrill Bryan, John M. Bryan

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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.