Robert L. Gandt Books

The Twilight Warriors

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Winner of the 2011 Samuel Eliot Morison Award for Naval Literature, The Twilight Warriors is the engrossing, page-turning saga of a tightly knit band of naval aviators who are thrust into the final...

China Clipper

By Robert L. Gandt

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Skygods The Fall of Pan Am

By Robert GANDT

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Angels in the Sky

By Robert Gandt

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Angels in the Sky

By Robert Gandt

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Black Star Rising

By Robert Gandt

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China Clipper

By Robert Gandt

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Angels in the sky

By Robert L. Gandt

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"The gripping story of how an all-volunteer air force helped defeat five Arab nations and protect the fledgling Jewish state. In 1948, only three years after the Holocaust, the newly founded nation...

Black Star

By Robert Gandt, Robert L. Gandt

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Black Star

By Robert L. Gandt

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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.