George Omura Books

Mastering AutoCAD 2007 and AutoCAD LT 2007 Mastering

By George Omura

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Mastering AutoCAD 2008 and AutoCAD LT 2008 Mastering

By George Omura

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Mastering AutoCAD 2011 and AutoCAD LT 2011

By George Omura

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"Go beyond AutoCAD essentials to create amazing 2D and 3D technical drawings. AutoCADis the leading drawing software used by design and drafting professionals to create 2D and 3D technical drawing...

AutoCAD release 12 instant reference

By George Omura

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Mastering AutoCAD release 12 for Windows

By George Omura

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AutoCAD release 12 for Windows instant reference

By George Omura

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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.