Mary Hoffman Books

Banana Books

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Grace and her friends have all sorts of adventures during their summer vacation--going to the circus, taking an imaginary safari, making friends with an elderly neighbor, pretending to be astronaut...

Stravaganza

By Mary Hoffman

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While sick in bed with cancer, Lucien begins making journeys to Belleza, a place in a parallel world that resembles Venice, Italy, and becomes caught up in the political intrigues surrounding the D...

Leon s Lucky Lunch Break Dent Duckling Series

By Mary Hoffman

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The Babies Hotel Rompers

By Willow, Mary Hoffman

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Babies Hotel

By Mary Hoffman

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Earth, Fire, Water, Air

By Mary Hoffman

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The ancient philosophy of the world as made up of four elements--earth, fire, water, and air--becomes a contemporary entreaty for respect for the natural world and our place in it.

Sun, Moon, and Stars

By Mary Hoffman

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Discusses the stories which people from the ancient world told to explain their understanding of what they could see in the sky.

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.