Sean Tulien Books

How The Leopard Got His Spots Graphic Fiction Just So Stories

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The Pit and the Pendulum Edgar Allan Poe Graphic Novels

By Sean Tulien

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Clock King s time bomb

By Sean Tulien

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When, on New Year's eve, the Clock King sets off a time bomb that interferes with all technology that depends on clocks, it is up to the Flash to find the villain and his device and undo the chaos...

The Flash Fall 2011 Set

By Blake A. Hoena, J. E. Bright, Michael Dahl, Sean Tulien, Laurie S. Sutton

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Clock King's time bomb

By Sean Tulien

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When, on New Year's eve, the Clock King sets off a time bomb that interferes with all technology that depends on clocks, it is up to the Flash to find the villain and his device and undo the chaos...

Tall

By Donald Lemke

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Four American folktales come alive in this collection of comics.

The Dark Knight

By Luciano Vecchio, Sean Tulien

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Batman Crashes the Black Masquerade

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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.