David Mark Books

Sorrow Abound Aector McAvoy 3
Sorrow Abound Aector McAvoy 3

By David Mark

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Crazy cars
Crazy cars

By Mark David

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Presents ideas for wacky way out cars including a millispeed, crazytrailer and windster. Suggested level: primary, intermediate.

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Dein ist die Rache. McAvoys zweiter Fall
The dark winter
The dark winter

By David John Mark

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Taking pity
Taking pity

By David John Mark

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"The New York Times hails David Mark's police thrillers as "in the honorable tradition of Joseph Wambaugh and Ed McBain." In Taking Pity, Detective Sergeant Aector McAvoy returns for another darkly...

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A Rush of Blood
A Rush of Blood

By

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Going dirty
Going dirty

By Mark David

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Going dirty
Going dirty

By Mark David

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Going dirty
Going dirty

By Mark David

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How to Read Schematic Diagrams
How to Read Schematic Diagrams

By D. Mark

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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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