Patrick McCray Books

Giant Telescopes

By W. Patrick McCray

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Giant Telescopes

By W. Patrick McCray

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The visioneers

By Patrick McCray

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"In 1969, Princeton physicist Gerard O'Neill began looking outward to space colonies as the new frontier for humanity's expansion. A decade later, Eric Drexler, an MIT-trained engineer, turned his...

Visioneers

By W. Patrick McCray

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Glassmaking in Renaissance Venice

By W. Patrick McCray

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Visioneers

By W. Patrick McCray

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Tribute

By Michael Frizell

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Tribute

By Michael Frizell

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Fame

By Michael Frizell

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Dark Shadows Daybook

By Patrick McCray, Dana Gould, Wallace McBride

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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.