O Neal Bill Books

Texas gunslingers
Texas gunslingers

By O Neal Bill

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Captain Harry Wheeler
Captain Harry Wheeler

By O Neal Bill

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Border Queen Caldwell
Border Queen Caldwell

By O Neal Bill

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Encyclopedia of western gunfighters
Encyclopedia of western gunfighters

By O Neal Bill

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Data on 255 gunmen includes dates, birthplace, aliases and nicknames, occupations, and a brief biography.

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Henry Brown, the outlaw-marshal
The Johnson County War
The Johnson County War

By O Neal Bill

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The Johnson County War
The Johnson County War

By O Neal Bill

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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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