Stewart Robert Books

Use Visual Basic to create amazing graphics programs and advanced drawing tools. With Graphics Programming with Visual Basic, you'll learn how to do just that - and more. You'll be well on your way...

The arts

By Stewart Robert

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Mysteries of history

By Stewart Robert

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Examines the evidence surrounding some of history's unsolved mysteries, from why the pyramids were built to whether or not there was a conspiracy to kill President John F. Kennedy.

Report of Charles Abercrombie Concerning Hay s Mill on the Estate of St Fort Together with the Draining Some Ground Adjacent in the Process Stewart Against Heron

By Stewart Robert

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The narrow gate

By Stewart Robert

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The Narrow Gate presents 19 short essays that explore ways in which literary writing and visual art affirm and clarify values, in our personal lives and in art, itself, with topics ranging from "re...

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.