Connie Roop Books

China Visit to

By Peter Roop, Connie Roop

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Israel Visit to

By Peter Roop, Connie Roop

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Jean Nicolet and the Sign of the Thunderbird

By J.H. Ed. Peter, Connie Roop

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A visit to India

By Peter Roop

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Introduces the country of India, including the land, landmarks, homes, food, clothes, work, transportation, language, school, sports, celebrations, and the arts.

China

By Peter Roop

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Describes many aspects of the third largest country in the world including its land, landmarks, homes, food, clothes, sports, schools, celebrations, and art.

The youngest astronomers can go forth and journey into outer space in this fun, basic introduction to the solar system. The unique format presents our sun and each planet in order with graduated fl...

Going to Yellowstone

By Peter Roop, Connie Roop

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Martin Luther King Jr.

By Peter Roop

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An introductory biography of the Baptist minister and civil rights leader whose philosophy and practice of nonviolent civil disobedience helped African Americans win many battles for equal rights.

Susan B. Anthony (Lives and Times (Crystal Lake, Ill.).)

By Peter Roop

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An introductory biography of the early feminist who fought for women's right to vote.

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.