Max Marquardt Books

Wilbur Orville and the Flying Machine
Working Dogs
Working Dogs

By Max Marquardt

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Working Dogs Real Reading
Working Dogs Real Reading

By Max Marquardt

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Working dogs
Working dogs

By Max Marquardt

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Surveys the many tasks that dogs perform for people, for beginning readers.

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Wilbur and Orville and the flying machine
Wilbur and Orville and the flying machine

By Max Marquardt

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A biography of the aviator brothers, for beginning readers.

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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.

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