Karl Evanzz Books

The Messenger Announcement Brochure

By Karl Evanzz

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I Am The Greatest Quotes Muhammad Ali

By Karl Evanzz

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The Judas Factor: The Plot To Kill Malcolm X

By Karl Evanzz

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Uses Interviews And Declassified Government Documents To Argue That The Cia Conspired To Monitor, Manipulate, And Finally Silence The Black Nationalist Leader

Here, eagerly anticipated, is the definitive biography of Elijah Muhammad (né Elija Poole), a sharecropper's son with a fourth- grade education who became one of the most controversial Americans of...

The Wilma Chestnut Story

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The Judas Factor

By Karl Evanzz

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The Messenger

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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.