Neil M. Heyman Books

Western Civilization

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Since January 28, 1975, Eduard "Billy" Meier has been at the center of an intense international controversy both within the UFO community of supporters and between believers and skeptics. Meier con...

World War I

By Neil M. Heyman

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Daily Life During World War I

By Neil M. Heyman

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Russian History

By Neil M. Heyman

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World War I

By Neil M. Heyman

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Daily Life During World War I

By Neil M. Heyman

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Daily Life During World War I

By Neil M. Heyman

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World War I

By Neil Heyman

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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.