Martin Kaplan Books

The Harvard lampoon centennial celebration, 1876-1973

By Martin Kaplan

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What the IRS Doesn t Want You to Know

By Martin S. Kaplan

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Educating for survival

By Ernest L. Boyer

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Warners war

By Lane Relyea, Suzanne Weaver, Martin Kaplan

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Armed with one of Hollywood’s most powerful studios, Harry and Jack Warner fought a personal crusade against Hitler. Warners’ War brings to light treasures from the USC Warner Bros. Archives, inclu...

Understanding World Jury Systems Psychological Research

By Martin Kaplan

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What the IRS Doesn t Want You to Know

By Martin Kaplan

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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.