John Helfers Books

Shadowrun

By Jason Schmetzer, Jean Rabe, Jason Hardy, William H. Keith, Steven Mohan, Brad Beaulieu, John Helfers, Phaedra Weldon, Matt Forbeck, Michael A. Stackpole

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Towering Yarns

By Teresa Patterson, Arthur C. Clarke, Christian W Smith, Janny Wurtz, John Helfers, Paul Crilley, William H Keith, Charles Sheffield, Jody Lynn Nye, Mike Resnick

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The Threshold

By John Helfers, R. L. King

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Cloak and Dagger

By Russell Davis, John Helfers, Tom Clancy, Steve R. Pieczenik

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Predicting the future has long been a cornerstone of science fiction. Now seventeen farseeing authors have taken up the challenge of gazing into the future and seeing where America may be the day a...

Villains Victorious

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Champions of Aetaltis

By Ed Greenwood, Dave Gross, Elizabeth A. Vaughan, Erin M. Evans, David Farland, Jean Rabe, Melanie Meadors, Aaron Rosenberg, Lucy A. Snyder, Elaine Cunningham, Mel Odom, Marc Tassin, Steven S. Long, Richard Lee Byers, John Helfers, Larry Correia, Cat Rambo

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Man Vs Machine

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Man Vs Machine

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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.