Connie Roop Books

A city

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Describes the transportation, schools, housing, shopping, working, recreation, and other aspects of life in a large city, using Chicago, Illinois, as an example.

A suburb

By Peter Roop

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Describes the housing, schools, transportation, recreational opportunities, shopping, and other aspects of life in the suburbs, using Rancho Bernardo, California, as an example.

Martin Luther King Jr. Lives and Times

By Peter Roop, Connie Roop

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Keep the Lights Burning Abbie

By Peter Roop, Connie Roop

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Keep the Lights

By Peter Roop, Connie Roop

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River Roads West

By Peter Roop, Connie Roop

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Buttons for General Washington On My Own Hstory

By Peter Roop, Connie Roop

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Buttons for General Washington

By Peter Roop, Connie Roop

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Buttons for General Washington

By Peter Roop, Connie Roop

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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.