John Frederick Walker Books

The Coffee Connoisseur s Companion

By Elin McCoy, John Frederick Walker

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A Certain Curve of Horn

By John Frederick Walker

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A Certain Curve of Horn

By John Frederick Walker

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"In A Certain Curve of Horn, veteran journalist John Frederick Walker tells the story of the giant sable, weaving an enthralling epic of exploration and adventure, politics and war, bringing to lif...

Ivory s ghosts

By John Frederick Walker

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A historical examination of the ivory trade, its significance in cultures around the world, and the ban instituted in the 1980s to save the African elephant looks at what is to be done with the gro...

Ivory s Ghosts

By John Frederick Walker

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Mr. Boston

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Ivory s Ghosts

By John Frederick Walker

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Certain Curve of Horn

By John Frederick Walker

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Ivory s Ghosts

By John Frederick Walker

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Ivory's Ghosts: The White Gold of History and the Fate of Elephants

By John Frederick Walker

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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.