James R. Duncan Books

The petroglyphs and pictographs of Missouri

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"This book documents Missouri's rich array of petroglyphs and pictographs, analyzing the many aspects of these rock carvings and paintings to show how such representations of ritual activities can...

The Rock Art of Eastern North America

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The Rock Art of Eastern North America

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Owls of the world

By James R. Duncan

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Owls of the world

By James R. Duncan

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Petroglyphs and Pictographs of Missouri

By Carol Diaz Granados, James R. Duncan

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Blood Republic

By James R Duncan

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The complete book of North American owls

By James R. Duncan

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Transforming the Landscape

By Carol Diaz Granados, Mark Wagner, Jan Simek, James R. Duncan, George Sabo

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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.