F. Baumgartner Books

"A noteworthy development is recent history has been the disappearance of formal declarations of war. Many Americans argue that the result of this development has been to abrogate the US Constituti...

Declaring War in Early Modern Europe

By F. Baumgartner

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Behind Locked Doors

By Frederic J. Baumgartner

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"Since the early seventeenth century, whenever a pope dies, the cardinals of the Roman Catholic Church have convened in Rome to elect a successor and all eyes focus on The Eternal City. The Papal C...

Behind Locked Doors

By F. Baumgartner, McNamara

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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.