John T. Ellis Books

Guide to the ASI real estate license examinations

By John T. Ellis

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Guide to real estate license examinations

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Guide to real estate license examinations

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Mastering Real Estate Math in One Day

By Jean Little, John T. Ellis

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Martha didn't want a pair of huge argyle socks for her birthday and she definitely didn't want to wear the baggy things all the way across town to thank her aunt for them.

American Catholicism History of American Civilization

By John Tracy Ellis

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American Catholicism

By John Tracy Ellis

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The Ulam Problem of Optimal Motion of Line Segments

By V.A. Dubovitskij, John T. Ellis

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Real Estate Resource Book

By Bruce M. Harwood, John Ellis

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Real Estate Practicum

By J. And Harwood B. Ellis

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Guide to Real Estate License Examinations

By John T. Ellis

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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.