Michael A. Calabrese Books

Chaucer's Ovidian arts of love

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More than any other poet in Chaucer's library, Ovid was concerned with the game of love. Chaucer learned his sexual poetics from Ovid, and his fascination with Ovidian love strategies is prominent...

Chaucer s Ovidian Arts of Love

By Michael A. Calabrese

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Yee Baw for bokes

By Michael A. Calabrese, Stephen H. A. Shepherd

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Introduction to Piers Plowman

By Michael A. Calabrese

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An Introduction to Piers Plowman

By Michael Calabrese

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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.