John W. Crowley Books

"There are no second acts in American lives." F. Scott Fitzgerald's famous pronouncement, an epitaph for his own foreshortened career, points out a pattern of imaginative blight common to writers o...

The Mask of Fiction

By John W. Crowley

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The Dean of American Letters

By John William Crowley

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"The final volume of John W. Crowley's trilogy of works on William Dean Howells, this book focuses on the much neglected last decades of the author's life. It was during this period that Howells, a...

Drunkard s Refuge

By John W. Crowley, William L. White

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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.