Rinna Wolfe Books

Edmonia Lewis
Edmonia Lewis

By Rinna Wolfe

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Edmonia Lewis
Edmonia Lewis

By Rinna Wolfe

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Charles Richard Drew, M.D.
Charles Richard Drew, M.D.

By Rinna Wolfe

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A biography of the noted physician, focusing on his discovery of methods for separating plasma from blood.

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Mary McLeod Bethune
Mary McLeod Bethune

By Rinna Wolfe

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A biography of the black educator who sought equality for members of her race.

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The singing Pope the story of Pope John Paul II
The singing Pope the story of Pope John Paul II

By Rinna Wolfe

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A biography of the former Polish cardinal who was the first non-Italian to be elected Pope since 1523.

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The Calvin Simmons story, or, Don't call me Maestro!
Edmonia Lewis
Edmonia Lewis

By Rinna Evelyn Wolfe

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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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