James P. Levy Books

The Royal Navy's Home Fleet in World War II

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"If Hitler was to be defeated, 'fortress Britain' would have to hold out. Only Britain could act as a launching pad for the bomber offensive, cover the dispatch of supplies to the Red Army and act...

Royal Navy s Home Fleet in World War 2

By J. Levy

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Royal Navy s Home Fleet in World War 2

By William James Philpott, James Levy

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Appeasement and rearmament

By James P. Levy

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Appeasement and Rearmament: Britain, 1936-1939

By James P. Levy

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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.