Elias Lopez Books

Coordinated Approach to Raising the Socio Economic Status of Latinos in C Alifornia

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High-growth industries and highly-educated workers in California

By Elias Lopez

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California State University faculty

By Elias Lopez

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Less-educated workers in California

By Elias Lopez

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The Peruvian Vegan Cookbook

By Elias Lopez, Enid Soto Lopez

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Why did we make a Peruvian Vegan Cookbook? Our family roots are Peruvian, and we have been vegan for many years. Peruvian cuisine is famous for its variety and flavor. However, only very few of the...

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.