Pau Estrada Books

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By Patrick Robinson

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The April Fool's Day mystery

By Marion M. Markham

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The Dixon twins try to discover who put the snake in the school cafeteria flour bin on April Fool's Day, clearing an unjustly suspected classmate in the process.

Just not the same

By Addie Lacoe

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On their birthday triplets Cleo, Mirabelle, and Gertrude discover the virtues of compromise and sharing.

Little Red Riding Hood

By Wilhelm Grimm, Pau Estrada, Brothers Grimm

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Little Red Riding Hood

By James Surges, Wilhelm Grimm, Pau Estrada, Brothers Grimm

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A little girl meets a hungry wolf in the forest while on her way to visit her sick grandmother.

Little Red Riding Hood

By James Surges, Wilhelm Grimm, Pau Estrada, Brothers Grimm

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Opal in the closet

By Joan Knight

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Feeling left out following the birth of her new sibling, Opal plays an annoying game with her family.

Mother Fox and Mr. Coyote Mama Zorra y Don Coyote

By Victor Villasenor

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Le Petit Chaperon rouge

By Wilhelm Grimm, Pau Estrada, Francesc Boada, Brothers Grimm

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Rondina que rondinaras

By Pau Estrada, Elisabet Abeya

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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.