Jonathan Fryer Books

Ronald Firbank

By Jonathan Fryer

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Robbie Ross

By Jonathan Fryer

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"Robbie Ross is best known as the young man who first seduced Oscar Wilde and at the end acted as Wilde's devoted and able literary executor. He achieved something his lover appeared incapable of -...

Robbie Ross

By Jonathan Fryer

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Eye of the Camera a Life of Christopher

By Jonathan Fryer

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A transformed world

By Jonathan Fryer

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The Sitwells Who s Who in Art Society Between the Wars

By Jonathan Fryer, Robin Gibson, John Pearson, Honor Clerk, Sarah H. Bradford

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George Fox and the Children of the Light

By Jonathan Fryer, George Fox

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Dylan

By Jonathan Fryer

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Dylan

By Jonathan Fryer

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Wilde Life and Times

By Jonathan Fryer

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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.