Charles Roy Schroeder Books

Karate
Karate

By Charles Roy Schroeder

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The human body: its structure and function
Astrowheeling
Astrowheeling

By Charles Roy Schroeder

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Big Cats (Zoo Books)
Big Cats (Zoo Books)

By John Bonnett Wexo, Edward J. Maruska, Charles Roy Schroeder

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Discusses the physical description, habits, behavior, and future of such big cats as lions, tigers, leopards, and cheetahs, using numerous pictures.

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The apes
The apes

By John Bonnett Wexo, Charles Roy Schroeder

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Discusses the physical description, habits, and behavior of the members of the ape family (gorillas, orangutans, chimpanzees), using numerous pictures.

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Boxing Skills for Fun and Fitness
Adagio
Adagio

By Charles Roy Schroeder

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Fat is not a four-letter word
Body Music
Body Music

By Charles Roy Schroeder

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Taking the Work Out of Working Out

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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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