Mike Knudson Books

Raymond and Graham Rule the School

By Steve Wilkinson Mike Knudson

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Dancing Dudes

By Mike Knudson

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Raymond And Graham Rule The School Turtleback School Library Binding Edition Raymond Graham PB

By Mike Knudson

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Raymond and Graham Rule the School Raymond and Graham

By Steve Wilkinson, Mike Knudson

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Best friends Raymond and Graham have looked forward to being the "oldest, coolest, toughest" boys at East Millcreek Elementary School, but from the start of fourth grade everything goes wrong, from...

Raymond and Graham Halloween Scare Raymond and Graham Halloween Scare

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Raymond and Graham Rule the School Raymond and Graham Vol. 1

By Mike Knudson

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Raymond and Graham: Bases Loaded

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Best friends Raymond and Graham couldn't be more excited for the start of baseball season. But can they defeat their rival team and win the minor league championships? On the long road to glory, th...

Raymond Graham Cool Campers

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Raymond and Graham: Dancing Dudes

By Mike Knudson

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It?s time for the fourth grade?s annual hoedown, and best friends Raymond and Graham are ready to wow the whole school with their great dance moves. But Raymond faces a tough choice when it?s time...

Raymond and Graham

By Mike Knudson

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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.