Gene Gurney Books

Handbook of Successful Franchising

By Friedlander Mark Jr., Gene Gurney

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A Pictorial History of the United States Army in War and Peace from Colonial Times to Vietnam

By Outlet

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The official Washington, D.C. directory

By Gene Gurney

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Brief historical commentaries on Washington, D.C., and some of its major buildings accompany four hundred black and white photographs of the parks, monuments, buildings, and statues of the city and...

The Air Force Museum

By Nick P. Apple

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The Air Force Museum

By Nick P. Apple

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Cosmonauts in orbit

By Gene Gurney

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Traces the development of Russia's space program and provides biographical material on the cosmonauts.

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.