Dennis L. McKiernan Books

City Of Jade A Novel Of Mithgar

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Once Upon a Summer Day

By Dennis L. McKiernan

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Once Upon a Winter's Night

By Dennis L. McKiernan

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The bestselling author of the Mithgar novels presents a new version of a fable that fires the imagination and touches the heart...Once upon a winter's night, a poor crofter trades his daughter Cami...

Once Upon an Autumn Eve

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Once Upon a Summer Day

By Dennis L. McKiernan

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Once Upon an Autumn Eve

By Dennis L. McKiernan

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The national bestselling author of the beloved Mithgar fantasies, Dennis L. McKiernan continues his enchanting seasonal fairytale cycle with a spellbinding story of love and legend.   Once upo...

Dragondoom

By Dennis L. McKiernan

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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.