O Donnell Michael Books

The devil's prison

By O Donnell Michael

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Writing business plans that get results

By O Donnell Michael

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How a man prepares his sons for life

By O Donnell Michael

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Turning green wood

By O Donnell Michael

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Medicine s strangest cases

By O Donnell Michael

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In examining the medical profession from the age of Hippocrates to the present day, unearths some odd characters, , including the Essex man who kept getting pregnant; the physician who gave syphili...

What a son needs from his dad

By O Donnell Michael

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"Encouragement and practical advice for fathers as they help their sons navigate everything from friendships and dating to spiritual growth"--Provided by publisher.

Heart of the warrior

By O Donnell Michael

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Heart of the warrior

By O Donnell Michael

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The Oz syndrome

By O Donnell Michael

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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.