W. Mark Ormrod Books

The new research here covers a number of aspects of the politics and culture of fourteenth-century England, including religious culture and institutions as illustrated in the cult of Thomas of Lanc...

Winner and Waster Chivalry Law and Economics in Fourteenth Century England

By W. Mark Ormrod

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Winner and Waster and Its Contexts

By W. Mark Ormrod

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Problem of Labour in Fourteenth Century England

By P. J. P. Goldberg, Christopher Dyer, W. M. Ormrod, James Bothwell

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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.