James L. Halperin Books

The First Immortal
The First Immortal

By James L. Halperin

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“[James Halperin] plots the book with thoroughness and imagination. . . . Innovative.”—Publishers WeeklyIn 1988, Benjamin Smith suffers a massive heart attack. But he will not die. A pioneering adv...

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The truth machine
The truth machine

By James L. Halperin

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How to Grade U.S. Coins
How to Grade U.S. Coins

By Jim Halperin

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Y2K
Y2K

By James L. Halperin

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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.

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