John Crittenden Books

Hialeah Park

By John Crittenden

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Nanotechnology for Renewable Energy Environmental Science and Biomedicine

By Jiaqi Mi, Markus Antonietti, Jie Song, Guibin Jiang, John Crittenden

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Principio de Tratamiento de Aguas

By David Hand, George Tchobanoglous, Rhodes Trussell, John Crittenden, Kerry Howe

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Blind Faith

By John Crittenden

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Fourth Printed Edition: Updated June, 2016. The continuing story of how one man reversed wet macular degeneration in eleven weeks. This update includes follow-up results of a Fluorescein Angiograph...

Early Times in Texas

By John Crittenden Duval

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Introduction to Fortran 77

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The Adventures of Big-Foot Wallace: The Texas Ranger and Hunter

By John Crittenden Duval

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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.