Les Johnson Books

Sky Alert When Satellites Fail

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Sky Alert

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How much do we depend on space satellites? Defense, travel, agriculture, weather forecasting, mobile phones and broadband, commerce...the list seems endless. But what would our live be like if the...

Harvesting Space for a Greener Earth

By Greg Matloff, C. Bangs, Les Johnson

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Rescue Mode

By Les Johnson, Ben Bova

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Stellaris

By Les Johnson, Robert Hampson

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Solar Sails

By Giovanni Vulpetti, Gregory L. Matloff, Les Johnson

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Graphene the superstrong superthin and superversatile material that will revolutionize the world

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Saving Proxima

By Les Johnson, Travis S. Taylor

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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.