John Edward Maher Books

What is economics?

By John Edward Maher

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Learning about why we must choose

By John Edward Maher

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Defines "economic scarcity" and explains how consumers make "economic choices" concerning the use and distribution of economically scarce items, including natural, human, and capital resources.

Ideas About Choosing

By John Edward Maher

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Ideas about money

By John Edward Maher

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Discusses the origins of money, its uses, and its function in an economy.

Ideas about taxes

By John Edward Maher

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Discusses the levying and collection of various taxes in order to provide public goods and services.

Ideas about measuring & accounting

By John Edward Maher

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Briefly explains the basic principles of accounting used by businesses, families, and government to keep track of money.

What Is Economics

By John Edward Maher

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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.