Charles Duncan Books

The absent man

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In The Absent Man, Charles Duncan attributes Chesnutt's uneasy position to a remarkable narrative subtlety that shields Chesnutt's personal views from the reader. "Her Virginia Mammy," for example,...

Twisted Mazes Troubadour

By Laura Dunham

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The art of classical guitar playing

By Charles Duncan, Duncan Charles

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Classical Guitar 2000

By Charles Duncan

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Modern Approach to Classical Guitar Bk. 1

By Charles Duncan, C. Duncan

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Absence Presence

By Charles Duncan

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Guitar at Sight

By Charles Duncan

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Sample Exam Questions

By Sami Zahran, Charles Duncan, Jamal El Ali, Rossetta Sornabala, John Estrella

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PMP practice makes perfect

By John Estrella

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A study guide for the Project Management Professional (PMP) exam.

Maltichon Activities Maltichon Tricks Games Agility Includes

By Charles Duncan

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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.