Donna Ruff Books

Eleanor Roosevelt first lady of the world
Eleanor Roosevelt first lady of the world

By Doris Faber

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A biography emphasizing the early years of Eleanor Roosevelt, who had enormous political influence and won love and respect as America's first lady.

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60 Hikes within 60 Miles Pittsburgh
Missing Sunflowers
Missing Sunflowers

By Maggie Stern, Donna Ruff

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Acorn Magic
Acorn Magic

By Maggie Stern, Donna Ruff

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60 Hikes Within 60 Miles
60 Hikes Within 60 Miles

By Donna Ruff

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60 Hikes Within 60 Miles Pittsburgh

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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.

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