Mark Healy Books

The collector
The collector

By Mark Healy

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Spiritualized
Spiritualized

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Modern Campaigns
Modern Campaigns
Modern Campaigns

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Modern Campaigns 15 Volume Set
Road crashes in W.A.
Road crashes in W.A.

By Elizabeth Grant

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King David
King David

By Mark Healy, Healy Mark.

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Traces David's rise from shepherd to King of Israel and describes his political and military achievements that marked a high point in Jewish history.

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Hannibal s War With Rome
Midway 1942
Cannas 216 a.C.
Cannas 216 a.C.

By Mark Healy

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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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