Chris Humphreys Books

The Fetch

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After exploring a sea chest full of runes and a journal belonging to his deceased grandfather, fifteen-year-old Sky summons the old man's ghost, who teaches him how to travel through time and space.

Vendetta

By Chris Humphreys

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After realizing the enormity of his Norwegian grandfather's betrayal, fifteen-year-old Sky leaves England to follow his visions to Corsica, the homeland of his other ancestors, hoping to find some...

Possession

By Chris Humphreys

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Sky and Kristin travel to the seventeenth century to learn secrets from their ancestor, the witch Meg, then to the Battle of Hastings to use that knowledge to prevent their evil grandfather Sigurd...

Vendetta

By Chris Humphreys

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Possession

By Chris Humphreys

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The Fetch

By Chris Humphreys

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Vendetta

By Chris Humphreys

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Karma and Rebirth

By Chris Humphreys

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Studies in the Middle Way

By Chris Humphreys, Christmas Humphreys

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The Wisdom of Buddhism

By Chris Humphreys

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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.