Lulu Delacre Books

Rafi y Rosi

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¡Ven al Castillo del Morro junto a Rafi y Rosi! Ríete de sus travesuras y junto a los divertidos coquíes descubre la historia pirata de Puerto Rico. "Rafi and Rosi, two curious tree frogs, explore...

Rafi y Rosi

By Lulu Delacre

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"Two tree frogs, mischievous Rafi and his younger sister Rosi, enjoy the events of Puerto Rico's Carnival season. Includes additional factual information and activities about the topics covered in...

Rafi and Rosi

By Lulu Delacre

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Two Puerto Rican tree frog siblings learn about science and social studies topics during their adventures on their island home.

It's time for Carnival! Puerto Rico's joyous holiday is full of sights and sounds to explore. Rosi is determined to show Rafi the best way to enjoy the parade, while Rafi has a plan to make his sis...

Arrorro Mi Nino

By Lulu Delacre

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An illustrated collection of nursery rhymes, finger play games, and lullabies from the major Latino groups living in the United States today. Includes some music.

How far do you love me

By Lulu Delacre

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"Messages of love between children and adults are framed in the language of the natural world spanning different cultures and all seven continents. Includes map and Author's Note"--

Arrorro Mi Nino

By Lulu Delacre

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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.