Robert Arthur Books

The three investigators in the mystery of the blazing cliffs

By M. V. Carey

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The sighting of a UFO leads the Three Investigators to uncover a bizarre confidence game.

An ear for danger

By Robert Arthur, Marc Brandel

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The Three Investigators, just turned seventeen, win a free trip to Mexico and find themselves on an unexpected quest for treasure in the Sierra Madre.

Hot wheels

By William Arden

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Mystery and music intertwine as the Three Investigators try to find the connection between a car-theft ring and a Latin rock band.

Murder to go

By Megan Stine

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The Three Investigators look into a rumor of poisoning in a fast-food chain.

FUNNY BUSINESS The 3 Investigators Crimebusters No 4

By Robert Arthur

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The shotgun stock

By Arthur Robert

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The Mystery of the Silver Spider

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Mystery of the Screaming Clock

By Alfred Hitchcock

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The Mystery of the Green Ghost

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The Mystery of the Talking Skull

By Robert Arthur

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Scholastic #TK 2922.

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.