Robert Roper Books

Picture-perfect Tommy

By Sarah Willson

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When Tommy and the other Rugrats go to the museum, one of Tommy's paintings ends up on display.

The Little Flower Seed Clifford s Puppy Days Little Red Reader

By Sarah Fisch

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Dora Goes To The Doctor/Dora Goes To The Dentist (Dora The Explorer)

By Robert Roper, Random House, Ellen Rosebrough, CHRISTINE RICCI, Ellen Rosebrough; Illustrated By Robert Roper

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Join Nickelodeon's Dora the Explorer as she visits the doctor for a checkup. Then flip the book over and follow her to the dentist. This 2-in-1 storybook is sure to entertain girls and boys ages 3-...

Giving thanks

By Sarah Fisch

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Clifford and his family are preparing for Thanksgiving but Clifford is afraid the holiday is not for dogs.

Dora s snowy forest adventure

By Lauryn Silverhardt

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When the Witch locks the Snow Princess in a tower, the Snow Fairy must save her quickly before the Snowy Forest melts away forever.

Facts and fun about the presidents

By George Sullivan

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Flies taste with their feet

By Melvin Berger

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This book is packed with gross facts about cool bugs from fireflies to army ants.

Tornadoes can make it rain crabs

By Melvin Berger, Gilda Berger

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Alma Winklegrin s Lower Denture Is Missing

By R. R. Roper

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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.