Alexander Kopelman Books

The Best Test Preparation for Gmat

By Tefera Worku, Elaine M. Klett, Ernest Woodward, Ellen H. Davis, Roger C. Fryer, Thomas C. Kennedy, James S. Malek, Vijay K. Rohatgi, Anita Price Davis, Alexander Kopelman, Marcia Mungenast

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Freelance Rates and Standard Practice

By National Writers Union U. S.

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The Empress Has No Clothes

By Joyce M. Roche With Alexander Kopelman

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You Deserve Your Success! Joyce Roché rose from humble circumstances to earn an Ivy League MBA and become the first female African-American vice president of Avon, president of a leading ha...

Empress Has No Clothes

By Alexander Kopelman, Joyce M. Roche

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Empress Has No Clothes

By Alexander Kopelman

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How to Sound More Confident Than You Feel

By Alexander Kopelman Joyce Roche

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Empress Has No Clothes

By Joyce M. Roche, Alexander Kopelman

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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.