Jarrett J. Krosoczka Books

The First Helping (Lunch Lady Books 1 & 2)

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*Odyssey Honor Audiobook* Fans of Captain Underpants won't want to miss the adventures of a lunch lady who serves justice--now available for the first time as a two-book collection!Serving justice...

The First Helping (Lunch Lady Books 1 & 2)

By Jarrett J. Krosoczka

Average: 0.00, 0 Ratings

*Odyssey Honor Audiobook* Fans of Captain Underpants won't want to miss the adventures of a lunch lady who serves justice--now available for the first time as a two-book collection!Serving justice...

The Second Helping (Lunch Lady Books 3 & 4)

By Jarrett J. 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!...

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.