Douglas Allan Books

Advanced Nursing Practice: Changing Healthcare in a Changing World
The Physics of Hydrogenated Amorphous Silicon
Ventilated Patient
Ventilated Patient

By Douglas Allan

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Nursing and the Neurosciences
Neuromedical and Neurosurgical Nursing Current Nursing Practice
The penguin in the snow
The penguin in the snow

By Douglas Allan

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Text and photographs depict penguins feeding, breeding, and defending themselves in their natural habitats.

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The seal on the rocks
The seal on the rocks

By Douglas Allan

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Text and photographs depict seals feeding, breeding, and defending themselves in their natural habitats.

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The penguin in the snow
The penguin in the snow

By Douglas Allan

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Text and photographs depict penguins feeding, breeding, and defending themselves in their natural habitats.

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The seal on the rocks
The seal on the rocks

By Douglas Allan

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Text and photographs depict seals feeding, breeding, and defending themselves in their natural habitats.

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The World of Seals The World of

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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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