SJ King Books

Adventures with The Secret Explorers: Collection One

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Dive into the world of the Secret Explorers and join them on their action-packed adventures in this four-book boxset collection.Meet the Secret Explorers - a band of brainiac kids from all around t...

Los Exploradores Secretos y la caida del cometa (Secret Explorers Comet Collision)

By SJ King

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Despega hacia el espacio en esta segunda aventura con Los Exploradores Secretos, una nueva serie de ficción.¡Conoce a los exploradores secretos! Son un grupo de niños brillantes de alrededor del mu...

Los Exploradores Secretos y las ballenas perdidas (Secret Explorers Lost Whales)

By SJ King

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Sumérgete en el mundo de los exploradores secretos y aprende sobre la vida oceánica en esta trepidante primera entrega de una nueva serie de ficción.¡Conoce a los exploradores secretos! Son un grup...

The Timekeepers: Samurai Saga

By SJ King

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Tag along with the Timekeepers in these history-themed adventure stories and discover amazing people and events that shaped our world.Join the Timekeepers in this chapter book series for 7 to 9 yea...

The Timekeepers: The Tesla Trap

By SJ King

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The Timekeepers are a secret organization of kids who keep the course of history on track. And history needs them—a villain called DeLay is causing chaos!When the hands on their watches start to sp...

Los Exploradores Secretos y los guardaparques de la selva (Secret Explorers Rainforest Rangers)

By SJ King

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¡Embárcate en una emocionante aventura por la selva tropical y conoce a los Exploradores Secretos!Ollie, Cheng, Leah, Connor, Roshni, Kiki, Tamiko y Gustavo. Un equipo de niños brillantes de todo e...

Los Exploradores Secretos y el rescate jurasico (Secret Explorers Jurassic Rescue)

By SJ King

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¡Viaja en el tiempo hasta la prehistoria y descubre cómo era la vida de los dinosaurios junto a los Exploradores Secretos!Ollie, Cheng, Leah, Connor, Roshni, Kiki, Tamiko y Gustavo. ¡Son los Explor...

The Secret Explorers and the Ice Age Adventure

By S J King

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Meet the Secret Explorers! Children will be inspired to discover the world with these character-driven adventure stories for children aged 7 to 9 years old.Learn all about the ice age and woolly ma...

The Secret Explorers and the Comet Collision

By SJ King

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Meet The Secret Explorers! Children will be inspired to discover the world with these brand new character-driven adventure stories for children.Get a closer look at Jupiter and its moons in this ac...

The Secret Explorers and the Lost Whales

By SJ King

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Meet The Secret Explorers! Children will be inspired to discover the world with these brand new character-driven adventure stories for children.Learn about humpback whales and fascinating deep-sea...

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.

SJ King Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?