David Bachrach Books

Religion and the Conduct of War c.300-c.1215 (Warfare in History)

By David S. Bachrach, Bachrach David Steward

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"Warfare in all histories and cultures shows evidence of the driving need to sanctify the cause, from the personal devotions of individuals to the grand designs of the architects of battle. In his...

Warfare in Medieval Europe c.400 c.1453

By Bernard S Bachrach, David Bachrach

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Saxon War

By Bruno Of Merseburg, Bernard S. Bachrach, David Bachrach

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Saxon War

By Bruno Of Merseburg, Bernard S. Bachrach, David Bachrach

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Warfare in Medieval Europe C. 400 C. 1453

By Bernard S. Bachrach, David Bachrach

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Warfare in Medieval Europe 400 1453

By Bernard S. Bachrach, David Bachrach

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Warfare in Medieval Europe 400 1453

By Bernard S. Bachrach, David Bachrach

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Warfare in Medieval Europe 400 1453

By Bernard S. Bachrach, David Bachrach

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Warfare in Medieval Europe 400 1453

By Bernard S. Bachrach, David Bachrach

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Warfare in Tenth Century Germany

By David S. Bachrach

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Over the course of half a century, the first two kings of the Saxon dynasty, Henry I (919-936) and Otto I (936-973), waged war across the length and breadth of Europe. Ottonian armies campaigned fr...

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.