Bob Eggleton Books

The Moon is a Harsh Mistress

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It is a tale of revolution, of the rebellion of a former penal colony on the Moon against its masters on the Earth. It is a tale of a culture whose family structures are based on the presence of tw...

The Moon Is A Harsh Mistress

By Robert A. Heinlein, Bob Eggleton, Mark B. Adams Science Fiction Collection (University Of Pennsylvania)

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SUMMARY: Robert A. Heinlein was the most influential science fiction writer of his era, an influence so large that, as Samuel R. Delany notes, "modern critics attempting to wrestle with that influe...

Far Futures

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Dragon weather

By Lawrence Watt Evans

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End of An Era

By Robert J. Sawyer

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In the Shadow of the Moon Genellan No 2

By Scott G. Gier

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Watch Out, Jar Jar!

By Bob Eggleton, Kerry Milliron

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Watch Out, Jar Jar (Star Wars Episode 1)

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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.