Robert Marx Books

Famous American Plays of the 80s
In Quest Of The Great White Gods:: Contacts Between the Old and New World from the Dawn of History
A complrison of clinimetric and psychometric techniques for item reduction in the development of an upper extremity disability measure
Professional painted finishes
Professional Painted Finishes A Guide to the Art and Business of Decorative Painting
Famous America Plays of the Nineteen Eighties
Sunken Treasure
Sunken Treasure

By Robert Marx

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New world shipwrecks, 1492-1825
Revision ACL reconstruction
Revision ACL reconstruction

By Robert Marx

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Treasure lost at sea
Treasure lost at sea

By Robert F. Marx

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An exploration of underwater archeological sites and shipwrecks dating from the beginning of recorded history to the present day.

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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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