Robert J. Dvorchak Books

The most comprehensive and explosive book on the worst scandal in the history of sports, Game Over investigates the devastating sexual abuse case that brought down Joe Paterno and forever tarnished...

Battle for Korea

By Robert J. Dvorchak

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Battle for Korea

By Robert J. Dvorchak, Associated Press

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The Golden Brigade

By Robert J. Dvorchak

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An epic tale of a brotherhood forged by war—masterfully told by a lifelong journalist, war correspondent, and U.S. Army veteran.“A must-read by military historians who follow the 82nd Airborne Divi...

Golden Brigade

By Robert J. Dvorchak

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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.