Donald W. Gregory Books

Voice and Data Communications Handbook

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Voice And Data Communications Handbook: Signature Edition

By Donald W. Gregory, Regis J. "Bud" Bates, Regis J. Bates, Regis J. Bates, Donald W. Gregory, Regis J. "Bud" Bates, Regis "Bud" J. Bates

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Telecommunications is one of the world's fastest-growing industries, absorbing many inexperienced, nontechnical personnel into a highly technical field. That's why industry veterans Regis J. "Bud"...

Voice & Data Communications Handbook

By Regis J. Bates

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Voice & Data Communications Handbook

By Regis J. Bates

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Voice & Data Communications Handbook, Fifth Edition

By Regis Bud J. Bates, Regis J. Bates, Donald W. Gregory

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Radium Girls

By Donald W. Gregory

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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.