Gunther Von Pairis Books

The capture of Constantinople

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The armies of the Fourth Crusade that left Western Europe at the beginning of the thirteenth century never reached the Holy Land to fight the Infidel; they stopped instead at Byzantium and sacked t...

Helinandi Frigidi Montis Monachi Necnon Guntheri Cisterciensis Opera Omnia

By Odo De Soliaco., Helinand De Froidmont, Gunther Von Pairis

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Hystoria Constantinopolitana

By Gunther Von Pairis

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Ligurinus

By Gunther Von Pairis

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Guntheri Alemanni Scholastici Monachi et Prioris Parisiensis de Expugnatione Urbis Constantinopolitane Unde Inter Alias Reliquias Magna Pars Sancte Crucis in Alemanniam Est Allata

By Gunther Von Pairis

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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.