Jim Marrs Books

Las Sociedades Secretas

By Jim Marrs, Luis Racionero

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Regeren vanuit het duister

By Jim Marrs

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Beschrijving van de activiteiten van geheime organisaties in verleden en heden.

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.

Jim Marrs Books

Above top secret

Above Top Secret

Las Sociedades Secretas

Regeren vanuit het duister

Espias Psiquicos

Alien Agenda

The War on Freedom

The Rise of the Fourth Reich

Rise of the Fourth Reich

The Rise of the Fourth Reich

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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