John N. Summerson Books

"Inigo Jones, the first English classical architect, was famous in his own time and was the posthumous sponsor of the Palladian movement of the eighteenth century. This book, first published in 196...

Georgian London Paul Mellon Centre for Studies in Britis

By John N. Summerson

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"In this classic of English architectural history (first published more than half a century ago), John Summerson provided a perceptive and highly readable account of a major building period in the...

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.