Robert Trujillo Books

Furqan s first flat top

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Furqan Moreno wakes up and decides that today he wants his hair cut for the first time. His dad has just the style: a flat top fade! He wants his new haircut to be cool but when they get to the bar...

A bean and cheese taco birthday

By Diane Gonzales Bertrand

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Five-year-old Ariel wants a very simple birthday celebration at the park with bean and cheese tacos and bubbles, despite his older brother Dario's preference for big birthday parties.

Dolores Huerta

By Robert Liu Trujillo

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Dolores Huerta

By Robert Liu Trujillo

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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.