David Zimmerman Books

Operating Base Cornucopia. A three-hundred-year-old fortress in the remote Iraqi desert where a few dozen soldiers wait for their next assignment, among them Private Toby Durrant, a self-described...

Sandbox

By David Zimmerman

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Caring Is Creepy

By David Zimmerman

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Fifteen-year-old Lynn Marie Sugrue is doing her best to make it through a difficult summer. Her mother works long hours as a nurse, and Lynn suspects that her mother’s pill-popping boyfriend...

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.