David M Schwartz Books

Millions to Measure

By David M. Schwartz

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Millions to Measure

By David M. Schwartz

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On beyond a million

By David M. Schwartz

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How Much Is a Million?

By David M. Schwartz

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Text and pictures try to make possible the conceptualization of a million, a billion, and a trillion.

If You Made a Million

By David M. Schwartz

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Describes the various forms which money can take, including coins, paper money, and personal checks, and how it can be used to make purchases, pay off loans, or build interest in the bank.

If you made a million

By David M. Schwartz

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Describes the various forms which money can take, including coins, paper money, and personal checks, and how it can be used to make purchases, pay off loans, or build interest in the bank.

Yanomami

By David M. Schwartz

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Millions to measure

By David M. Schwartz

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Marvelosissimo the Magician explains the development of standard units of measure, and shows the simplicity of calculating length, height, weight, and volume using the metric system.

If You Made a Million

By David M. Schwartz

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On Beyond a Million

By David M. Schwartz

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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.