David I. Kertzer Books

The Popes Against the Jews

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"A historical study based on documents previously locked in the Vatican's secret archives: The Popes Against the Jews graphically shows how the Catholic Church helped make the Holocaust possible."....

The Popes Against the Jews

By David I. Kertzer

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In this meticulously researched, unflinching, and reasoned study, National Book Award finalist David I. Kertzer presents shocking revelations about the role played by the Vatican in the development...

Comrades and Christians: Religions and Political Struggle in Communist Italy

By David I. Kertzer

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This book examines the popular bases of Communist influence in Italy, focusing on the struggle between the Catholic Church and the Communist Party for the allegiance of the Italian people. The auth...

Comrades and Christians: Religions and Political Struggle in Communist Italy

By David I. Kertzer

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Prisoner Of The Vatican: The Popes' Secret Plot To Capture Rome From The New Italian State

By David I. Kertzer

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Amalia s Tale

By David I. Kertzer

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Prisoner of the Vatican

By David I. Kertzer

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The kidnapping of Edgardo Mortara

By David I. Kertzer

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Bologna, 1858: A police posse, acting on the orders of a Catholic inquisitor, invades the home of a Jewish merchant, Momolo Mortara, wrenches his crying six-year-old son from his arms, and rushes h...

Sacrificed for honor

By David I. Kertzer

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Sacrificed for Honor

By David I. Kertzer

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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.