Phyllis Colonna Books

The power of integrity, featuring the story of J.C. Penney

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Reggie Ruler tells the story of J.C. Penney, who became a millionaire in the dry goods business, while adhering to his principles of honesty and integrity.

Power of Trying Again

By Beatrice W. Friel, Phyllis Colonna, Della Mae Rasmussen

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A biography of the country lawyer who through sheer perseverance became the sixteenth president of the United States and became known as perhaps the greatest American ever.

Power of Sportsmanship

By Phyllis Colonna, Della Mae Rasmussen

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Focuses on the personal quality of sportsmanship in presenting the athletic life of one of the greatest athletes of all time.

Power of Enthusiasm

By Phyllis Colonna

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Power of Determination

By Phyllis Colonna

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Power of Courage

By Phyllis Colonna

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Power of Cheerfulness

By Phyllis Colonna

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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.