Christopher J. Brownfield Books

Oil on Landscape Art from Wartime Contemporaries of Baghdad

By Christopher J. Brownfield

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Subversion

By Christopher Brownfield

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My nuclear family

By Christopher J. Brownfield

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Play Therapy with Adolescents

By Christopher J. Brownfield, Charles E. Schaefer, Theresa Kestly, Claire Milgrom, Loretta Gallo Lopez

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The unsentimental education of an idealistic, brilliant American naval officer.It begins in 2001. Christopher Brownfield is a naïve young midshipman. His heroes at the time: Oliver North and John M...

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.