Patrick J. Gallo Books

For love and country

By Patrick J. Gallo

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Pius Xii the Holocaust And the Revisionists

By Patrick J. Gallo

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"Through a series of articles and essays, the editor and eight contributors critique the works of revisionists who allege that Pius XII was sympathetic to the Nazis or unresistant to their atrociti...

Ethnic alienation: the Italian-Americans

By Patrick J. Gallo

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Old bread, new wine

By Patrick J. Gallo

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India s image of the international system Military affairs Aerospace historian instant publishing series

By Patrick J. Gallo

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Swords and plowshares

By Patrick J. Gallo

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The American Paradox

By Patrick J. Gallo

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Enemies

By Patrick J. Gallo

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Enemies

By Patrick J. Gallo

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Nazis the Vatican and the Jews of Rome

By Patrick Gallo

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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.