Humphrey Hawksley Books

The history book

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Catherine 'Kat' Polinski--burglar, hacker, undercover agent--returns home from a deadly mission at the Kazakh Embassy in Washington, DC, to find a cryptic message from her sister. Soon after, she l...

Operation Dragon Fire

By Humphrey Hawksley

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Dragon Fire

By Humphrey Hawksley

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Dragon Strike

By Humphrey Hawksley, Simon Holberton

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Dragon Fire

By Humphrey Hawksley

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Third World War

By Humphrey Hawksley

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The History Book

By Humphrey Hawksley

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History Book

By Humphrey Hawksley

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The History Book

By Humphrey Hawksley

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The History Book

By Humphrey Hawksley

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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.