Derek Fridolfs Books

Detention of Doom DC Comics Secret Hero Society 3
Finders Creepers Half Past Peculiar Book 1
Finders Creepers Half Past Peculiar Book 1
Midnite Our Half Past Peculiar 2
Looney Tunes Wordless Graphic Novels Pack a Of 4
Galaxy Golf
Galaxy Golf

By Dave Alvarez, Derek Fridolfs

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Picnic Pigs
Picnic Pigs

By Derek Fridolfs, Scott Gross

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Batman
Batman

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Batman
Batman

By Derek Fridolfs

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After the inmates escape Arkham, these criminals have free reign over an entire Gotham neighborhood and only Batman and his allies can stop them.

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Batman
Batman

By Derek Fridolfs

Average: 0.00, 0 Ratings

After the inmates escape Arkham, these criminals have free reign over an entire Gotham neighborhood and only Batman and his allies can stop them.

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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.

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