Gregory L. Vogt Books

Landscapes of Mars
Landscapes of Mars

By Gregory L. Vogt

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Solar system
Solar system

By Gregory L. Vogt, Gregory Vogt

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Describes the Sun, planets, and other objects in the solar system.

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Model Rockets
Model Rockets

By Gregory Vogt

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Space satellites
Space satellites

By Gregory Vogt

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An album of modern spaceships
An album of modern spaceships

By Gregory Vogt

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An illustrated history of developments in manned spaceships, including a discussion of future programs and the effect of the "Challenger" tragedy.

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Development of the American Experience
Development of the American Experience
Mercury Gateway Solar System
The Sun Gateway Solar System
Pluto Gateway Solar System
Pluto Gateway Solar System

By Gregory Vogt

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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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