Dorothy Haas Books

Burton's zoom zoom va-room machine

By Dorothy Haas

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Evil Professor Savvy tries to steal Burton's newest invention, a rocket-powered skateboard.

Forces at Work Student Book. Gr 6. Unit 25.

By Macmillan.

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The SECRET LIFE OF DILLY MCBEAN

By Dorothy Haas, Irene Haas

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After being orphaned at an early age and spending years in boarding schools, Dilly begins a new life in a real house in a small town, developing secret magnetic powers under the tutelage of a kindl...

Burton's zoom zoom va-room machine

By Dorothy Haas

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Evil Professor Savvy tries to steal Burton's newest invention, a rocket-powered skateboard.

Burton and the Giggle Machine

By Dorothy Haas, Irene Haas

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When Burton invents a machine to make people laugh, it arouses curiosity and greed in the evil Professor Savvy. Sequel to "Burton's zoom zoom va-room machine."

Dorothy and the seven-leaf clover

By Dorothy Haas, Oz Haas

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When Toto disappears while they are visiting their friends in Oz, Dorothy finds him caught by an unusual Golden Boy who is under the spell of the Wicked Witch of the West.

Dorothy and old King Crow

By Dorothy Haas

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Luckily for Dorothy, Spelling Bee helps her spell a hard word so she can break King Crow's spell over Scarecrow.

Dorothy and the seven-leaf clover

By Dorothy Haas

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When Toto disappears while they are visiting their friends in Oz, Dorothy finds him caught by an unusual Golden Boy who is under the spell of the Wicked Witch of the West.

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.