Dan Friedman Books

"The Maryland State Constitution is the only comprehensive analysis of Maryland's constitution. Dan Friedman provides an outstanding historical account of the state's governing charter along with a...

Economics Lab

By Alessandra Cassar, Dan Friedman

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The Strange Case Of Dr Doyle A Journey Into Madness And Mayhem

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New Connections

By Dan Friedman, Rennie W. Brantz

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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.