Dorothy Woolfolk Books

After spending the night in a Colorado ghost town with the members of her hiking club, Donna Rockford discovers that her sister Abbey has vanished without a trace

Mother Where Are You

By Dorothy Woolfolk

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Amateur detective Donna Rockford has her first real case...and a chance to prove to her boyfriend Pete that girls can be great at lots of things. Donna's roommate, Janet, who is adopted, has decide...

Mystery In Studio 13

By Dorothy Woolfolk

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How to Look Like a Winner

By Dorothy Woolfolk

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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.