Lulu Delacre Books

The message in the stars Pebble soup

By Lulu Delacre

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Arroz Con Leche

By Lulu Delacre

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Navidades Christmas Songs from Latin America

By Lulu Delacre

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The Storyteller s Candle La velita de los cuentos

By Lucia M. Gonzalez, Lulu Delacre

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During the early days of the Great Depression, New York City's first Puerto Rican librarian, Pura Belpré, introduces the public library to immigrants living in El Barrio and hosts the neighborhood'...

Olinguito de la A a la Z

By Lulu Delacre

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"Uses the framework of the alphabet to present information about plants and animals of the cloud forest on the western slopes of the Ecuadorian Andes and the 2013 discovery of the olinguito. Includ...

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.

Rafi and Rosi

By Lulu Delacre

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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...

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 Pirates

By Lulu Delacre

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Rafi y Rosi

By Lulu Delacre

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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...

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.