John Betancourt Books

Pit and the pendulum

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Here are five funny, entertaining, delectable mystery stories featuring Peter "Pit Bull" Geller, who may be a bit damaged physically (in an auto accident), but has lost neither his biting wit nor h...

Tom Swift and His Airline Express

By Victor Appleton, John Betancourt

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Tales of Three Hemispheres

By John Betancourt, Darrell Schweitzer, Lord Dunsany

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Pulp Classics

By John Gregory Betancourt

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The Best of Weird tales

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New Masterpieces of Horror

By Ed John Betancourt

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Sci fi Channel Trivia Tr

By John G. Betancourt

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The Last Days of Pompeii

By John Betancourt, Edward Bulwer Lytton Baron Lytton

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The Blind Archer

By John Betancourt

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Rememory

By John Betancourt

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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.