Alexander Marcus Books

The Dark Army

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Imprisoned in the mythical world of Bellania, Charlie Keeper is at the mercy of Lord Bane's guards while her loyal friends have been sold into slavery. When Edge Darkmount breaks into her cell, he...

Keeper of the Realms

By Marcus Alexander

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The Dark Army

By Marcus Alexander

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Imprisoned in the mythical world of Bellania, Charlie Keeper is at the mercy of Lord Bane's guards while her loyal friends have been sold into slavery. When Edge Darkmount breaks into her cell, he...

Ascendant

By Will Conrad, Jiny Coronado, David Campit, Mel Joy San Juan, Alexander Marcus

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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.