Michael Crowley Books

New Kid on Spurwink Ave.

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The new kid in the neighborhood resists the attempts of the Spurwink Gang to involve him in their activities, until finally he is ready to unveil his amazing invention.

Shack and Back

By Michael Crowley

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Crater insults T-Ball and causes her to quit the Spurwink Gang, just when they need her riding talent to win a bike race.

08: A Graphic Diary of the Campaign Trail

By Michael Crowley

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Down the shore

By Nance Trueworthy

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Chemical Control

By Michael Crowley

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The man they couldn t hang

By Michael Crowley

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A Graphic Retelling Of The Most Historic Election Of Our TimeBeyond the pandering focus groups, the billion-dollar fund-raising machinery, and the relentless myopia of the 24-hour news cycle, it wa...

Secret Drugs of Buddhism

By Michael Crowley, Ann Shulgin

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Secret Drugs of Buddhism

By Michael Crowley, Ann Shulgin

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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.