Heron Marquez Books

Latin Sensations

By Heron Marquez

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George W. Bush

By Heron Marquez

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Russia in pictures

By Heron Marquez

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A historical and current look at Russia, discussing the land, the government, the people, and the economy.

Latin sensations

By Heron Marquez

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Profiles five influential Latino entertainers of the 1990s, Ricky Martin, Selena, Jennifer Lopez, Enrique Iglesias, and Marc Anthony, detailing their rise to stardom and their effects on the Americ...

George W. Bush Biography a E

By Heron Marquez

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George W. Bush Biography a E

By Heron Marquez

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Jesse Ventura Tells It Like It Is

By Heron Marquez, Jesse Ventura

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George W. Bush

By Heron Marquez

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Latin Sensations A E Biography

By Heron Marquez

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Destination Veracruz

By Heron Marquez

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An introduction to the port city of Veracruz, describing its geography, history, economy, and daily life.

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.