John O'Meara Books

Pure Mathematics Modular Maths for Edexcel A AS Level

By Val Hanrahan, Alan Smith, John Sykes, David O Meara

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Delaware-English, English-Delaware dictionary

By O Meara John

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Munsee Delaware, an Eastern Algonquian language, is spoken by a small and steadily declining number of individuals. The Delaware-speaking peoples originally lived in the area of what is now New Yor...

Delaware Reference Grammar

By John O Meara

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Otherworldly Hamlet

By John O Meara, O Meara John

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Remembering Eyrecourt

By John O Meara

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The thinking spirit

By O Meara John

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Prospero's powers

By O Meara John

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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.