Michael Jan Friedman Books

The Mutt in the Iron Muzzle

By Michael Jan Friedman

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Hunchdog of Notre Dame

By Michael Jan Friedman

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During a fast-paced roller hockey game in which an awkward boy is humiliated by the other players, Wishbone imagines himself as Quasimodo, the hunchbacked bellringer of Paris's Notre Dame Cathedral...

The Sirian conspiracy

By Michael Jan Friedman

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When a mysterious green, glowing object drops from the sky on the outskirts of Oakdale, Wishbone and friends set out to investigate.

The Complete Aliens Omnibus: Volume Five (Original Sin, DNA War)

By Michael Jan Friedman

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Original Sinby Michael Jan FriedmanCenturies after the death of the original Ellen Ripley, her clone has joined the fight against the Alien threat. With the help of an android named Call, a brutal...

Star Trek The Next Generation Comics Classics: The Battle Within

By Michael Jan Friedman

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Star Trek: The Next Generation breathed new life into the Star Trek franchise and kicked off a whole new era of Starfleet exploration and adventure! Now the crew of the Enterprise-D continue their...

Star Trek The Next Generation Comics Classics: The Hero Factor

By Michael Jan Friedman

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One of the most successful syndicated series of all time, Star Trek: The Next Generation breathed new life into the Star Trek franchise and kicked off a whole new era of Starfleet exploration and a...

Mystery of the Missing Crew

By Michael Jan Friedman

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The Captain's Table: Books One Through Six

By Michael Jan Friedman, L. A. Graf, Jerry Oltion

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STAR TREK THE NEXT GENERATION ALL GOOD THINGS

By Michael Jan Friedman

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The Ultimates: Tomorrow Men

By Michael Jan Friedman

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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.