Ellen Weiss Books

The Stinky Giant

By Ellen Weiss, Mel Friedman, Alessia Girasole

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The curse of the calico cat

By Ellen Weiss

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Nonnie and her Uncle Paul help her new friends get rid of the evil cat which came along with their ancient family curse.

The adventures of Ratman

By Ellen Weiss

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With the help of a rat costume, Tod Watson is transformed from an ordinary eight-year-old into a superhero name Ratman.

Welcome to the big blue house!

By Ellen Weiss

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After coming to live with nine-year-old Emily and her family in Washington, D.C., in 1916, Hitty, a well-traveled wooden doll, witnesses the efforts of Emily's aunt and other suffragettes to win th...

Twins in the park

By Ellen Weiss

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A visit to the park includes playing in the sand and on the seesaw.

Twins in the park

By Ellen Weiss

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A visit to the park includes playing in the sand and on the seesaw.

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.