Paul Robertson Books

Road to Nowhere

By Paul Robertson, Paul J. Robertson

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An elegant solution

By Paul Robertson

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"In a quiet 1720 Swiss university town, math prodigy Leonhard Euler is thrust into a dangerous web of jealousy, intrigue, and murder, and he will need both his genius and his faith to survive"--

An elegant solution

By Paul Robertson

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"In a quiet 1720 Swiss university town, math prodigy Leonhard Euler is thrust into a dangerous web of jealousy, intrigue, and murder, and he will need both his genius and his faith to survive"--

According to their deeds

By Paul Robertson

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Dark in the city of light

By Paul Robertson

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Visual QuickStart Guide

By Paul Robertson

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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.