Stefan Petrucha Books

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A billionaire environmentalist has constructed bio-domes in River Heights to help save the planet, but, shortly after a gross green substance destroys one of the domes, creatures such as Sasquatch,...

Walt Disney's Uncle Scrooge.

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Five new adventures of Uncle Scrooge McDuck and his nephews.

Nancy Drew, girl detective.

By Stefan Petrucha

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Nancy sets off to find a long-lost engine that gets 200 miles to the gallon. The problem arises when they encounter a ghost that guards the machine.

Walt Disney's Uncle Scrooge.

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Six new adventures of Uncle Scrooge McDuck and his nephews.

Torn

By Thomas Pendleton, Stefan Petrucha

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Snared

By Thomas Pendleton, Stefan Petrucha

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Nancy Drew Girl Detective 1

By Stefan Petrucha

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Nancy Drew Girl Detective 10 by Stefan Petrucha and Sarah Kinney

By Stefan Petrucha Sarah Kinney

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Disney Fairies 1

By Stefan Petrucha

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Trust No One X Files

By Ray Garton, Kevin J. Anderson, Max Allan Collins, Brian Keene, Jonathan Maberry, Keith R. A. DeCandido, Gini Koch, Aaron Rosenberg, W. D. Gaglian, Timothy Deal, John Sheldon, Heather Graham, David Benton, Gayle Lynds, Stefan Petrucha, Paul Crilley, Peter Clines, Tim Lebbon

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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.