Mark N Ozer Books

The Ozer method
The Ozer method

By Mark N. Ozer

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Washington DC and the War of 1812
Washington DC and the War of 1812

By Mark N. Ozer

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Who? What? When? and Why? are the questions one wants to ask about Washington DC during the time of the War of 1812. It was the new national capital striving to find its rationale in its few public...

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Northwest Washington D.C.
Northwest Washington D.C.

By Mark N Ozer

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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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