Dia Calhoun Books

Thirteen-year-old Jonathon, feared and hated by the brown-eyed Valley people because of his blue eyes, tries to find answers to his true identity in the Red Mountains, home of the Dalriada, a mount...

Aria of the sea

By Dia Calhoun

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In the magical kingdom of Windward, thirteen-year-old Cerinthe arrives at the Royal Dancing School, where she finds herself torn between the two careers of dancer and healer.

Ein Klang von weit her.

By Dia Calhoun

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The Return of Light

By Dia Calhoun

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Firegold

By Dia Calhoun

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Avielle of Rhia

By Dia Calhoun

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Eva of the Farm

By Kate Slater, Dia Calhoun

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After the river the sun

By Dia Calhoun

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After his parents' death, his own near-drowning, and months in foster care, twelve-year-old Eckhart Lyon moves to his Uncle Al's orchard on trial but yearns for a real home, and with new friend Eva...

After the river the sun

By Dia Calhoun

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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.