Robert E. Vardeman Books

The Screaming Knife
The Screaming Knife

By Robert E. Vardeman

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The Resonance of Blood
The Quaking Lands The Jade Demons Book 1
Frozen Waves Jade Demons No. 2
Crystal Clouds The Jade Demons No 3
The White Fire Jade Demons No 4
Sundered Realm
Sundered Realm

By Robert E. Vardeman

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Echoes of Chaos The Weapons of Chaos Bk. 1
The Beasts Of The Mist
The Beasts Of The Mist

By George W. Proctor, Robert E. Vardeman, Robert Vardeman, Geo. W. Proctor

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Some page discoloration. Otherwise, in very good condition.

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The infinity plague
The infinity plague

By Robert E. Vardeman

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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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