Tamara L. Roleff Books

Police Corruption
Police Corruption

By Tamara L. Roleff

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Fact or Fiction Black Magic and Witches
Fact or Fiction Black Magic and Witches
The World Trade Center Attack History Firsthand
Fact or Fiction Alien Abductions
Fact or Fiction Alien Abductions

By Tamara L. Roleff

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Opposing viewpoints on the question of alien abductions are presented in a variety of articles examining the evidence for such a phenomena.

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Fact or Fiction Alien Abductions
Oklahoma City Bombing
Oklahoma City Bombing

By Tamara L. Roleff

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History Firsthand Oklahoma City Bombing
Criminal Justice
Criminal Justice

By Tamara L. Roleff

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Criminal Justice
Criminal Justice

By Tamara L. Roleff

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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.

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