Holly George Warren Books

The Appalachians: America's First and Last Frontier

By Robert Santelli, Holly George Warren, Mari Lynn Evans

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"In a time when the world has become a global village and America a global nation, there is one place where things are largely as they used to be. Protected by mountains, largely ignored by modern...

Brad Pitt

By Holly George Warren, Mark Seliger, Us Magazine, Chris Mundy

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A Man Called Destruction

By Holly George Warren

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The first biography of the artist who “essentially invented indie and alternative rock” (Spin)A brilliant and influential songwriter, vocalist, and guitarist, the charismatic Alex Chilt...

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.