John Ryan Books

Captain Pugwash Cover to Cover
Captain Pugwash Cover to Cover

By John Ryan

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Round About 5
Wil Y Smyglwr
Wil Y Smyglwr

By John Ryan

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Raising Economic Growth
Raising Economic Growth

By John Ryan

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One man's Africa
One man's Africa

By John Ryan

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John Ryan s Express
John Ryan s Express

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Stories you wouldn t tell your mother
Stories you wouldn t tell your mother

By John Ryan

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This title tells the author's stories of travelling south from Mongolia, down through China and Southeast Asia, continuing on to Australia, New Zealand, the States and finally arriving in London. T...

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Clifford Analysis and Related Topics
Challenges and Strategies of Dryland Agriculture
Captain Pugwash Secret San Fia
Captain Pugwash Secret San Fia

By John Ryan

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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.

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