Ronald L. Ruiz Books

A lawyer

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"Ronald L. Ruiz's memoir spans over 36 years of practicing law in California, focusing on five memorable cases. One of only six Mexican-American lawyers practicing law in Northern California during...

Happy birthday Jesus

By Ronald L. Ruiz

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Happy Birthday Jesus chronicles the creation of a monster: Jesus Olivas, a Mexican American boy raised by his grandmother in northern California. Survival of the fittest is the law in young Jesus'...

Giuseppe Rocco

By Ronald L. Ruiz

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Giuseppe Rocco, an Italian immigrant, raises himself from nothing to immense wealth and political influence in northern California through his self-made scavenger business and a series of shrewd la...

The big bear

By Ronald L. Ruiz

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Happy Birthday Jesus

By Ronald L. Ruiz

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Jesusita

By Ronald L. Ruiz, Sarah Koz, John Manos, Hugo Anaya

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Jesusita

By Ronald L. Ruiz, Sarah Koz, John Manos, Hugo Anaya

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Happy Birthday Jesus

By Ronald L. Ruiz

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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.