Michael Northrop Books

Rotten By Michael Northrup Paperback

By Michael Northrup

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Amulet keepers

By Michael Northrop

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Investigating a string of disappearances amid supernatural occurrences in London, Alex and Ren discover the workings of a powerful Death Walker intent on destroying the city. Investigating a strin...

Valley of Kings

By Michael Northrop

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Journeying to the Valley of Kings, Alex and Ren prepare to combat powerful Death Walkers that are causing trouble throughout the world.

The stone warriors

By Michael Northrop

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Twelve-year-olds Alex and Renata are on the run from the Order, which is on the brink of creating an army of indestructible stone warriors to carry out their evil schemes, and only the Lost Spells...

Book of the Dead TombQuest Book 1

By Michael Northrop

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Amulet Keepers TombQuest Book 2

By Michael Northrop

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The Stone Warriors

By Michael Northrop, Ramon De Ocampo

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Polaris

By Michael Northrop

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"In the 1830s Owen Ward is cabin boy on the "Polaris," a ship on a voyage of scientific exploration, when illness and a mutiny off the coast of Brazil cause the adult crew to abandon the ship, leav...

On Thin Ice

By Michael Northrop

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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.