Gerald Henry Blake Books

Maritime Boundaries: World Boundaries Volume 5

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Foreword / Geoffrey Marston -- 1. The American Society Of International Law Maritime Boundary Project / Jonathan I. Charney -- 2. State Practice In Maritime Delimitation / Rodman R. Bundy -- 3. A H...

The Cambridge Atlas of the Middle East North Africa

By Jonathan Mitchell, Gerald Blake, John Dewdney

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Camb Atlas Mid East North Africa

By Jonathan Mitchell, Gerald Blake, John Dewdney

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Maritime Boundaries and Ocean Resources

By Gerald Blake

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The Changing Middle Eastern city

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International boundaries and environmental security

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The Suez Canal

By Gerald Henry Blake

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Maritime aspects of Arabian geopolitics

By G. H. Blake

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The peaceful management of transboundary resources

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Boundaries and Energy

By Gerald Henry Blake

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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.