John Hornor Jacobs Books

The Incorruptibles

By John Hornor Jacobs

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The Incorruptibles

By John Hornor Jacobs

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Foreign devils

By John Hornor Jacobs

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Fisk and Shoe - mercenaries, very much not wanting to get caught in the middle of a political whirlwind - must deliver a very important message, and find a very dangerous man. They have caught the...

Foreign Devils

By John Hornor Jacobs

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Infernal Machines

By John Hornor Jacobs

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Infernal Machines

By John Hornor Jacobs

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The Incorruptibles

By John Hornor Jacobs

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The Shibboleth

By John Hornor Jacobs

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As Shreve Cannon's ability to absorb the memories of others has him teetering on the edge of insanity, he returns to the custody of the state of Arkansas, this time in a mental institution, but he...

The Conformity

By John Hornor Jacobs

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"Shreve, along with Jack and his mute girlfriend Ember, travel to Maryland to solve the mystery behind "the elder," the ancient, malevolent force hidden near Baltimore, which has been sending psych...

A Lush and Seething Hell

By John Hornor Jacobs

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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.