George Koch Books

Oracle8i: The Complete Reference

By Kevin Loney, George Koch

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Oracle9i: The Complete Reference

By George Koch, Kevin Loney, Kevin Loney, George Koch, And The Experts At TUSC

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Master all the powerful features of Oracle9 i using the exclusive information inside this indispensable resource. Written by best-selling Oracle Press authors Kevin Loney and George Koch, this vol...

Oracle: The complete reference

By George Koch

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Oracle7: The complete reference

By George Koch

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Oracle Complete Reference Ver 7.2

By Kevin Loney, George Koch

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Oracle: The Complete Reference, Electronic Edition

By Kevin Loney, George Koch

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Oracle8: The Complete Reference

By Kevin Loney, George Koch

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Human Resources Impostors

By George N. Koch, George Koch

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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.