Duffy John Books

Fights of our lives
Fights of our lives

By Duffy John

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Triumph over tragedy
Triumph over tragedy

By Duffy John, John Duffy

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"How much human and financial loss can one company endure and still muster the strength and the resources to rebuild itself? The September 11 terrorist attacks pushed many companies beyond what app...

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Writing from These Roots
The watchdogs didn t bark
The watchdogs didn t bark

By Duffy John

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"The shocking reexamination of unexplored failures by government officials to use available intelligence to stop the events of September 11th" --

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GCSE additional science
Psychiatry Specialty Board Review for the DSM IV
Triumph over Tragedy
CliffsQuickReview Economics
CliffsQuickReview Economics

By Duffy John

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Triumph over Tragedy
CliffsQuickReview Economics
CliffsQuickReview Economics

By Duffy John

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Related Articles from our Blog

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.

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