Christopher Newman Books

Nineteenth Precinct

By Christopher Newman

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Precinct Command

By Christopher Newman

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Chains of Command: Completed by Christopher Newman

By Christopher Newman, William J. Caunitz

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Fearful that a new drug war will hurt her career, New York deputy police commissioner Suzanne Albrecht turns to an old flame for help. Lieutenant Stuart of the intelligence unit goes undercover and...

Midtown South.

By Christopher Newman

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The Sixth precinct.

By Christopher Newman

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The devil's own

By Christopher Newman

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Midtown North

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Midtown South

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Sixth Precinct

By Christopher Newman

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Knock Off

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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.