Jonathon King Books

Blue Edge of Midnight The

By Jonathon King

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Visible Darkness

By Jonathon King

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Shadow men

By Jonathon King

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"It begins with an eighty-year-old mystery. Three men - a father and his two sons - vanished without a trace while working as labourers on a dangerous project to build the first road through the Fl...

Shadow men

By Jonathon King

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Eye of Vengeance SIGNED

By Jonathon King

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The blue edge of midnight

By Jonathon King

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Shadow men

By Jonathon King

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A Visible Darkness Max Freeman Novels

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The Blue Edge of Midnight Max Freeman Novels Max Freeman Novels

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The Styx

By Jonathon King

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A fictional story about a black community on the island of Palm Beach and how the great migration to Florida changed their lives forever.

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.