Constance Bouchard Books

Knights

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The history of knights, from their everyday lives to their clothing, training, heraldry and orders, as well as their role in literature and film, and the decline of traditional knighthood.

Those of My Blood

By Constance Bouchard

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Three Cartularies from Thirteenth Century Auxerre

By Constance Bouchard

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Cartulary of Montier En der 666 1129

By Constance Bouchard

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Three Cartularies from Thirteenth Century Auxerre

By Constance Bouchard

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Haskins Society Journal 30

By William North, Laura L. Gathagan, Francesca Petrizzo, Constance Bouchard, Charles C. Rozier

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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.