Sigmar Books

Miedo a la oscuridad Scared of the dark Buenos Amigos
Me duele el diente My tooth hurts Buenos Amigos
Me Perdi I m Lost Buenos Amigos
El Fantasma de Canterville y Otros Cuentos
Cuentos de la selva Jungle Tales Clasicos Juveniles Juvenile Classics
Clo Clo Sonajero
Clo Clo Sonajero

By Sigmar

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Clasicos de Amor
Clasicos de Misterio
Clasicos de Misterio

By

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Animales Nocturnos De La Selva Coleccion
Clasicos de terror
Clasicos de terror

By Edgar Allan Poe, Otros

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En esta antología, grandes autores clásicos narran cuentos de terror. Lo terrorífico asusta y a la vez atrae, por eso el hombre siempre ha buscado dar forma artística a esa relación de repulsión y...

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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.

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