Daniel G. Keohane Books

Christmas Trees and Monkeys

By Daniel G. Keohane

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Plague of Darkness

By Daniel G. Keohane

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Solomon s Grave

By Daniel G Keohane

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Solomon s grave

By Daniel G. Keohane

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Nathan Dinneck finds himself the guardian of a secret that has been hidden since the days of King Solomon. Popes and kings covet its power and theologians and historians debate its very existence....

Margaret s Ark

By Daniel G. Keohane

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Plague of Locusts

By Daniel G. Keohane

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Photograph

By Daniel G. Keohane, David Hilman

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Wicked Creatures

By Daniel G. Keohane, Scott T. Goudsward, David Price

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Christmas Trees and Monkeys

By Daniel Keohane, Kellianne Jones

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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.