Kathleen Gay Books

Cities Under Stress

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Describes and analyzes the stresses and strains on urban systems in the United States and the decline of living conditions in many of them. Also suggests some factors that make certain cities desir...

Charlie Needs a Cloak

By Jean Little

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The not-so-minor leagues

By Douglas Gay

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A history of the minor leagues including major-league success stories of former minor players and a description of the inner workings of the business of minor-league baseball.

Gay

By Kathleen Gay

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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.