Shannon Knudsen Books

Neil Armstrong

By Shannon Zemlicka

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Nellie Bly

By Shannon Knudsen

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A biography of Nellie Bly who used her journalistic skills to fight against unjust treatment based on sex and race in late nineteenth- and early twentieth-century America.

Thomas Edison

By Shannon Knudsen

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Thomas Edison

By Shannon Knudsen

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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.

Guatemala

By Shannon Zemlicka

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Examines the geography, history, economy, society, people, and culture of Guatemala.

From Egg to Butterfly

By Shannon Zemlicka

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From Tadpole to Frog

By Shannon Zemlicka

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La Pascua En Todo El Mundo Easter Around the World Yo Solo Festividades on My Own Holidays

By Shannon Knudsen

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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.