Walter G Oleksy Books

1,000 tested money-making markets for writers

By Walter G. Oleksy

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Quacky and the crazy curve ball

By Walter G. Oleksy

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When faced with two challenges, making a baseball team for 13-year-olds and trapping the "Hungary Burglar," a 12-year-old orphan proves his resourcefulness.

Magic dimes-to-dollars wealth secrets

By Walter G. Oleksy

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1,000 tested money-making markets for writers

By Walter G. Oleksy

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Lasers

By Walter G. Oleksy

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Discusses the many uses of lasers in science, industry, health, space, optics, video, and almost every imaginable part of our lives.

Treasures of the land

By Walter G. Oleksy

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Describes numerous archaeological projects in all parts of the United States which provide opportunities for young people to work as volunteers. Includes first-person accounts of their experiences...

Laugh clown, cry

By Walter G. Oleksy

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A biography of Charlie Chaplin which reveals his attitudes, successes, and failures. Illustrated with black and white photographs.

Careers in Web Design

By Walter G. Oleksy

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The Head and Neck in 3D

By Jacintha Nathan, Walter G Oleksy

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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.