Christina Villegas Books

The Youth Unemployment Crisis

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"On June 24, 2012, Dr. Shane Truman Todd, a young American engineer, was found hanging in his Singapore apartment, just a week before his scheduled return to the United States. Although Shane had r...

Hard drive

By Mary Todd

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Foster Care in America

By Christina G. Villegas

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Alexander Hamilton

By Christina Villegas

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Alexander Hamilton

By Christina G. Villegas

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Modern Slavery

By Christina G. Villegas

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Modern Slavery

By Christina G. Villegas

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Hard Drive

By Mary Todd, Christina Villegas

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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.