Sean McKeever Books

Spider Man 2

By Sean McKeever

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Mary Jane Vol.1

By Sean McKeever

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Mary Jane.

By Sean McKeever

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In this updated story about Mary Jane, Peter Parker, and Harry Osborne's high school years, M.J. and the gang try to sort out the complexities of dating, friendship, and loyalty, while Mary Jane tr...

Mary Jane.

By Sean McKeever

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M.J. finally gets over Spider-Man and is excited about going to homecoming with her boyfriend Harry. However, Harry's father blames M.J. for his son's slipping grades and M.J.'s best friend Liz thi...

Marvel Age Fantastic Four

By Sean McKeever

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Spider man Loves Mary Jane 2

By Sean McKeever

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Outpost Zero

By Sean McKeever

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Mary Jane

By Sean McKeever

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The Loyalty Thing Mary Jane

By Sean McKeever

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The Trust Thing

By Sean McKeever

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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.