Frank Remkiewicz Books

Horrible Harry and the Locked Closet

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After four days in a row of indoor recess, Miss Mackle's students are bored-until Harry decides to solve the biggest mystery ever in Room 3B! There's a locked closet in the classroom that's been se...

Horrible Harry Bugs the Three Bears

By Suzy Kline, Frank Remkiewicz

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Froggy s Day with Dad

By Frank Remkiewicz, Jonathan London

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Froggy Is the Best

By Bonnie Bader, Frank Remkiewicz, Jonathan London

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Froggy hops into the Penguin Young Readers program!Froggy isn't the best at everything (like soccer or swimming), but he knows he has to be the best at something. Kids will love learning to read wi...

Froggy Is the Best

By Tomie DePaola, Frank Remkiewicz

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Gus makes a gift

By Frank Remkiewicz

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Gus se enoja

By Frank Remkiewicz

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Gus va al parque, pero las cosas no le salen como él quiere: ¡su barco no flota! Gus se enoja ...

Gus the Christmas star

By Frank Remkiewicz

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Gus Gets Scared

By Frank Remkiewicz

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Fiona Raps It Up

By Frank Remkiewicz

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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.