Roger Bruns Books

Negro Leagues baseball

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"This book traces the entire story of black baseball, documenting the growth of the Negro Leagues at a time when segregation dictated that the major leagues were strictly white, and explaining how...

Negro Leagues baseball

By Roger Bruns

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"This book traces the entire story of black baseball, documenting the growth of the Negro Leagues at a time when segregation dictated that the major leagues were strictly white, and explaining how...

Cesar Chavez and the United Farm Workers movement

By Roger Bruns

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Cesar Chavez and the United Farm Workers movement

By Roger Bruns

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Congress investigates

By David Hostetter, Raymond Smock, Roger Bruns

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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.