Knudsen Books

Instructors Manual
Instructors Manual

By Knudsen

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Eye for History
Eye for History

By Dean Knudsen

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Kosovo between War and Peace
Just Be Nice...and Other Lost Arts of Etiquette for Management
Library Lion
Library Lion

By Michelle Knudsen, Kevin Hawkes

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Old man river & me
Old man river & me

By Mark A. Knudsen

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Alice Ray and the Salem witch trials
Alice Ray and the Salem witch trials

By Shannon Zemlicka

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The story of the Salem witch trials includes a script for readers' theater.

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Nutrition and Food Needs in Developing Countries
New models for creative giving
Roots and Branches
Roots and Branches

By Robert D Knudsen

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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.

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