Robert Barry Books

It's all about communication

By Robert Barry, Barry Robert

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Theory of almost everything

By Barry Robert Statistician., Robert Barry

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The Music of the Future is not a book of predictions or speculations about how to save the music business or the bleeding edge of technologies. Rather, it's a history of failures, mapping 200 years...

Mr. Willowby's Christmas Tree

By Robert Barry

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When Mr. Willowby's Christmas tree is so tall that he has to cut the top off, he unwittingly provides trees for various people and animals.

Jesus Talks to You: 365 Daily Devotions for Experiencing GOD's Love

By Robert Barry

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The Music of the Future

By Robert Barry

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Mr. Willowby's Head Over Heels Christmas

By Robert Barry

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The beloved classic Mr. Willowby's Christmas Tree gets a sequel!Mr. Willowby's Christmas Tree has been a holiday favorite since 1963. Now, its generations of fans can read a new Mr. Willowby story,...

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.