Robb Armstrong Books

Drew and the Bub Daddy Showdown

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After breaking his wrist in an attempt to copy his daredevil brother, seven-year-old Drew is suddenly able to draw cartoons like a professional artist.

Drew and the Homeboy Question

By Robb Armstrong

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Drew's oldest friends accuse him of snobbery when he wins a scholarship to the Deerwood Academy for Boys, an exclusive all-white school.

Jumpstart: A Love Story

By Robb Armstrong

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Patrick's Pals 2: In Your Face!

By Robb Armstrong

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Patrick's Pals 3: Got Game?

By Robb Armstrong

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Stuffin' it

By Robb Armstrong

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Patrick and Ronnie have trouble keeping up with their studies between rehearsals for the Thanksgiving play and practice with their basketball team, and when Ronnie plans to cheat on a test, Patrick...

Patrick's Pals 5: Schoolin'

By Robb Armstrong

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Patrick's Pals 6: Trashmaster

By Robb Armstrong

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Patrick's Pals Sampler

By Robb Armstrong

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Drew and the Bub Daddy Showdown

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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.