O. H. Creighton Books

Medieval Town Walls

By Robert Higham, Oliver Creighton

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Castles and landscapes

By O. H. Creighton

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"Castles were among the most dominant features of the medieval landscape, and many remain impressive structures to the present day. This new study looks at castles in a new light, using the theorie...

Designs upon the land

By O. H. Creighton

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Medieval Castles Shire Archaeology

By Oliver Creighton

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Early European Castles

By Oliver Creighton

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Early European Castles Aristocracy And Authority Ad 8001200

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Castles and Landscapes

By O. H. Creighton

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Launceston Castle

By Jen Cryer, English Heritage Staff, O. H. Creighton

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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.