Erwin Madrid Books

The best bat

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A new chapter book series from Major League Baseball's 2006 National League MVP, Ryan Howard. Little Rhino's baseball season is in full swing! Grandpa James even buys Rhino a new bat as a reward fo...

Rocky Zang in The Amazing Mr. Magic

By Megan McDonald, Erwin Madrid

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Mrs. Moody In The Birthday Jinx

By Megan McDonald, Erwin Madrid

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Not So Lucky Lefty

By Megan McDonald, Erwin Madrid

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Judy Moody and Friends

By Megan McDonald, Erwin Madrid

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Judy Moody and Friends: Mrs. Moody in The Birthday Jinx

By Megan McDonald Illustrated By Erwin Madrid

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Judy’s mom takes the spotlight as the Moody family tries to give her the birthday she would like in a broadly funny episode just right for newly independent readers.Make a wish, Mrs. Moody! E...

Judy Moody and Friends: Mrs. Moody in The Birthday Jinx

By Megan McDonald Illustrated By Erwin Madrid

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Judy’s mom takes the spotlight as the Moody family tries to give her the birthday she would like in a broadly funny episode just right for newly independent readers.Make a wish, Mrs. Moody! E...

Judy Moody and Friends: One, Two, Three, ROAR!

By Megan McDonald Illustrated By Erwin Madrid

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Kids can get a jump start on the Judy Moody and Friends series with this appealing bind-up of three books in one.Here’s what’s included in this trio of tales — no lie!Jessica Finc...

Rudolph the Red Nosed Reindeer

By Thea Feldman, Erwin Madrid

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Judy Moody and Friends Collection 3

By Megan McDonald, Erwin Madrid, Amy Rubinate

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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.