Dave Duncan Books

The Alchemist's Apprentice

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To the legendary clairvoyant Maestro Nostradamus, the future is forever in motion. But for young swordsman Alfeo Zeno, his apprentice and protector, the present is hard enough to contend with. His...

It is said the legendary Maestro Nostradamus is able to glimpse the ever-changing future, but even he cannot see the danger that is about to envelop him when he is hired to find a foreign spy by Ve...

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.

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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.