Robie H. Harris Books

Es alucinante!

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Caricaturas de aves y abejas presentan explicaciones ilustradas de temas relacionados al desarrollo sexual, el amor, la reproducción, adopción, enfermedades transmitidas sexualmente y otras cosas....

Sexo...Que Es It s Perfectly Normal

By Robie H. Harris

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E ora parliamo di sesso

By Robie H. Harris

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Over baby s en zo en waar ze vandaan komen

By Robie H. Harris

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Maodi zai jian le

By Robie H. Harris

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A boy grieves for his dead pet Mousie, helps to bury him, and begins to come to terms with his loss.

The day Leo said I hate you

By Robie H. Harris

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Leo, upset that he has been hearing the word "no" all day, lets three words slip out that he wishes he could take back.

Mail Harry to the Moon

By Robie H. Harris

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I m So Mad

By Nicole Hollander, Robie H. Harris

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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.