Sudipta Bardhan Quallen Books

Snoring Beauty

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This picture book is a new spin on SLEEPING BEAUTY told from the perspective of a little mouse who can't get to sleep because of the princess's very loud snoring. "A new spin on "Sleeping Beauty"...

Chicks run wild

By Sudipta Bardhan Quallen

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When her little chicks refuse to settle down for the night, Mama decides to surprise them with an unusual request.

Search for the mermicorn

By Sudipta Bardhan Quallen

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Coral, Angel, and Shelly can t wait to work on their school project about creatures in the ocean. There are so many animals to choose from! How do you pick just one? Then Angel remembers something...

The Adventures of Caveboy

By Sudipta Bardhan Quallen

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Caveboy loves banging his club, running really fast, and playing with his friends, but when his club breaks, he needs to find a new one, leading him to making a new friend and discovering his own b...

Seasick sea horse

By Sudipta Bardhan Quallen

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Ms. Harbor's classroom has a new pet. A sea horse! The students are excited to take care of the little guy during the week. And on weekends, someone gets to bring the sea horse home for a visit! Sh...

The Fun Starts Here!

By Sudipta Bardhan Quallen, Mary Pope Osborne Barbara Park Ron Roy

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Let the adventure begin with four popular series--Magic Tree House, Junie B. Jones, A to Z Mysteries, and Purrmaids--all in one collection!Has a book ever made you laugh so hard milk came out of yo...

Purrmaids 11: A Purr-fect Pumpkin

By Sudipta Bardhan Quallen

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Chapter book readers' favorite kitten mermaids are back in their second holiday title -- it's time to celebrate Paw-loween! In Kittentail Cove, Paw-loween is a super fun holiday! Shelly, Coral...

Purrmaids 1: The Scaredy Cat

By Sudipta Bardhan Quallen

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Get totally smitten with mermaid kittens in the first book in this new chapter book series! It’s purrfect for fans of Magic Kitten and the Fairy Animals of Misty Wood series.   Coral, S...

Purrmaids 2: The Catfish Club

By Sudipta Bardhan Quallen

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Get totally smitten with mermaid kittens in book two of this new chapter book series! It’s purrfect for fans of Magic Kitten and the Fairy Animals of Misty Wood series.   Coral, Shelly,...

Purrmaids 3: Seasick Sea Horse

By Sudipta Bardhan Quallen

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Part kitten, part mermaid, the Purrmaids series is purrfect for chapter book readers and for fans of the Magic Kitten and Fairy Animals of Misty Wood series! And the purrfect class pet for the Purr...

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.