Jarrett Krosoczka Books

Punk Farm on Tour

By Jarrett Krosoczka

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Comics Squad 2 Lunch

By Jarrett Krosoczka, Peanuts, Cece Bell, Jennifer L. Holm, Matthew Holm

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The Second Helping (Lunch Lady Books 3 & 4)

By Jarrett Krosoczka

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Perfect for fans of Dogman and The Bad Guys, the popular Lunch Lady graphic novels are now in full color for the first time, with two adventures in one book...from the author of National Book Award...

The Second Helping (Lunch Lady Books 3 & 4)

By Jarrett Krosoczka

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Perfect for fans of Dogman and The Bad Guys, the popular Lunch Lady graphic novels are now available as two adventures in one audiobook...from the author of National Book Award finalist Hey, Kiddo!...

Lunch Lady And The League Of Librarians

By Jarrett J. Krosoczka

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Lunch Lady And The Summer Camp Shakedown Turtleback School Library Binding Edition

By Jarrett J. Krosoczka

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Lunch Lady And The Picture Day Peril

By Jarrett Krosoczka

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Lunch Lady And The Schoolwide Scuffle Turtleback School Library Binding Edition

By Jarrett Krosoczka

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Bubble Bath Pirates

By Jarrett J. Krosoczka, Jarrett Krosoczka

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When pirate mommy announces bath time, it is yo ho ho and to the bath we go for her little pirates.

Giddy Up, Cowgirl

By Jarrett J. Krosoczka

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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.