Edgar F. Puryear Books

American Admiralship

By Edgar F. Puryear

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American generalship

By Edgar F. Puryear, Edgar Puryear

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"Puryear has interviewed more than one hundred four-stars including many of the high level commanding generals of World War II (Eisenhower, Bradley, Spaatz, Le May) and virtually all post-war army...

American Generalship

By Edgar Puryear

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“What does it take to make a great general or a great leader in any field? . . . An excellent contribution to the study of leadership among those who make life-and-death decisions in the most...

Nineteen Stars

By Edgar F. Puryear, Edgar Puryear

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George S. Brown, General, U.S. Air Force

By Edgar F. Puryear

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American Admiralship

By Edgar F. Puryear Jr.

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Stars in Flight

By Edgar F. Puryear

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Stars in flight

By Edgar F. Puryear

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Wei jiang zhi dao

By Edgar F. Puryear

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Marine Corps Generalship

By Edgar F. Puryear

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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.