Nancy E. Krulik Books

Major League Mess-Up 29

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It’s baseball season, and Katie and her friends are busy rooting for their favorite team, the Cherrydale Porcupines. Katie loves the team, but can’t understand why her friends are so obsessed with...

Horsing Around 30

By Nancy E. Krulik

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Becky is taking riding lessons at the Cherrydale Stables. That's not news to Katie or her friends: In fact, they are sick of hearing about horses and sick of hearing Becky brag about what a great r...

How Do You Pee in Space? 13

By Nancy E. Krulik

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A real-life astronaut is coming to Edith B. Sugarman Elementary School, and one lucky kid gets to interview him! Not only that, a trip to a space adventurer program is also up for grabs. To win the...

Eww! What's on My Shoe? 11

By Nancy E. Krulik

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In the latest installment of Nancy Krulik's popular George Brown, Class Clown series, George is preparing for picture day, and his friend Alex is preparing to break the Schminess World Record for t...

Burp or treat...smell my feet

By Nancy E. Krulik

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"George is ready for candy and fun--but dealing with a prank-pulling phantom and learning that his friend might move away is almost as terrifying as the super burp. There are definitely more tricks...

Let the Burping Begin George Brown Class Clown

By Nancy E. Krulik

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Keep on burpin

By Nancy E. Krulik

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"How much trouble can a burp get you into? A lot, if the burp is a magic one that makes you do wild and crazy stuff." From the back cover.

A Collection of Katie

By Nancy E. Krulik

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A special treat for Katie Kazoo fans! This paperback collection combines the first four books in the bestselling Katie Kazoo series in one edition, perfect for young readers who are new to the seri...

Be Careful What You Sniff for 1

By Nancy E. Krulik

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Sent to the backyard for breaking a tick-tock-ticking toy, Sparky (an adorable but clumsy sheepdog puppy) immediately begins his favorite activity: diggety-dig-digging. Little does he know, he's ab...

Catch That Wave 2

By Nancy E. Krulik

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It's time for Sparky to go to school--Obedience School--where he'll learn to sit, heel, come, and stay. But Sparky would rather be anywhere else but school. So what does he do? You guessed it: chom...

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.