George Ochoa Books

The Book of Answers: The New York Public Library Telephone Reference Service's Most Unusual & Entertaining Questions

By George Ochoa, Melinda Corey, Barbara Berliner

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The Timeline Book of Ideas

By George Ochoa, Melinda Corey

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The fall of Quebec, and the French and Indian War

By George Ochoa

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Describes the people, places, and events surrounding the French and Indian War.

The fall of Quebec, and the French and Indian War

By George Ochoa

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Describes the people, places, and events surrounding the French and Indian War.

The assassination of Julius Caesar

By George Ochoa

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Examines the life and violent death of the Roman general and statesman who founded a line of emperors to inherit his power and his name.

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.