Robert Arthur Books

MYSTERY OF THE DEADLY DOUBLE

By Robert Arthur

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The Three Investigators in The Mystery of the Sinister Scarecrow

By M. V. Carey

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The theft of some mutant army ants by a scarecrow leads the Three Investigators to the solution of two daring crimes in the art world.

The three investigators in the case of the dancing dinosaur

By Rose Estes

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By making the correct decisions, the reader assists the Three Investigators in locating both a missing dinosaur fossil and a college professor accused of attempted murder.

MYSTERY OF THE SMASHING GLASS

By Robert Arthur

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CASE OF WEEPING COFFIN Find Your Fate Mystery Rh No 1

By Robert Arthur

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MYSTERY OF THE ROUGES REUNION Three Investigators Mystery No. 40

By Robert Arthur

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The mystery of the creep show crooks

By Robert Arthur, M. V. Carey

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The Three Investigators tangle with a couple of shady producers of horror films when they try to track down a runaway teenager.

CASE OF THE HOUSE OF HORRORS Find Your Fate Rh No. 7

By Robert Arthur

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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 Robert Arthur, Megan Stine

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

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.