Peter D. Bull Books

Lost In Time Again

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Mustela wanted to return to the 21st Century when he was known as John, but he wanted to take Suras with him. Mustela had been his name when he had lived as a Roman 2000 years earlier. He'd returne...

The Lost Ship

By Peter D. Bull

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John Bull and Alfie Turps are two friends having a drink at the "Fat Duck Inn". Both of them are knocked unconscious and hours later find themselves on a ship bound for Spain. They've been kidnappe...

I Used To Be Robert Jones

By Peter D. Bull

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Old Father Time

By Peter D. Bull

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Undercover

By Peter D. Bull

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Lecture Notes

By P. D. Bull, Peter D. Bull, Ray Clarke

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King Costa

By Peter D. Bull

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King Costa

By Peter D. Bull

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From Riches to Rags

By Peter D. Bull

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I Used to Be Robert Jones

By Peter D. Bull

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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.