David Klinghoffer Books

The Unofficial Guide to Cosmos

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The Mystery of Life s Origin

By Walter L Bradley, Guillermo Gonzalez, Roger L Olsen, David Klinghoffer, Jonathan Wells, Brian Miller, James Tour, Charles B Thaxton, Stephen Meyer

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Gift of Rest

By David Klinghoffer, Joseph I. Lieberman

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Shattered Tablets: Why We Ignore the Ten Commandments at Our Peril

By David Klinghoffer

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Is morality based on some essential truth or is it defined by society? In this highly original critique of American social mores and popular culture, David Klinghoffer argues that the Ten Commandme...

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.