Paul Hofmann Books

Rome: The Sweet Tempestuous Life

By Paul Hofmann

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Shadow Riders: The Southern Plains Uprising, 1873

By Terry C. Johnston

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Star Wreck II: The Attack of the Jargonites

By Leah Rewolinski

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The New Pope: How the Catholic Church Chose its New Leader

By Paul Hofmann

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The Vatican's Women: Female Influence at the Holy See

By Paul Hofmann

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"Four hundred of the 3,800 people who permanently live or work in the State of Vatican City are women. They are nuns and members of the laity: some are housekeepers of churchmen; others are secreta...

Electing the Pope

By Paul Hofmann

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The Vatican's Women

By Paul Hofmann

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The Viennese

By Paul Hofmann

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The Viennese

By Paul Hofmann

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Management Mistakes in Healthcare

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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.