Ruben Guevara Books

Confessions of a radical Chicano doo wop singer

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"A pioneer of Chicano rock, Rubén Funkahuatl Guevara performed with Frank Zappa, Johnny Otis, Bo Diddley, Tina Turner, and Celia Cruz, though he is best known as the frontman of the 1970s experimen...

Confessions of a radical Chicano doo-wop singer

By Ruben Guevara

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Confessions of a Radical Chicano Doo Wop Singer

By Ruben Funkahuatl Guevara

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Dimension 52

By Ruben Guevara

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Sustainable Forest Management and Global Climate Change

By Mohammed H. I. Dore, Ruben Guevara

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Liderazgo en Ventas

By Gabriel Leon, Atun Isabel De Ventas, Ruben Guevara, Fernando Guerrero, Gianfranco Mendoza

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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.