William B. Breuer Books

Race to the Moon is a suspenseful thriller about the 30-year clash between the United States and the Soviet Union to be the first to put a man on the moon. This true account is heavy with intrigue,...

J. Edgar Hoover and His G-Men

By William B. Breuer

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As the blood of criminal violence flowed through the streets in early 1920s America, the FBI was rendered helpless by unholy alliances with crooked politicians and shady dealings. A dynamic, young...

War and American women

By William B. Breuer

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Allowing women to serve in the military during wartime has been a subject of controversy since World War I, when, for the first time in history, thousands of American women volunteered, answering t...

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.