Deborah R. Geis Books

Approaching the Millennium Essays on Angels in America Theater Theory Text Performance

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Suzan-Lori Parks

By Deborah R. Geis

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Postmodern Theatric K S Monologue in Contemporary American Drama Theater Theory Text Performance

By Deborah R. Geis

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Approaching the Millennium: Essays on Angels in America

By Steven F. Kruger, Deborah R. Geis

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Tony Kushner's epic play Angels in America has been one of the most successful theatrical phenomena of recent years, playing to full houses in New York, Los Angeles, San Francisco, London, and Fran...

Suzan Lori Parks

By Deborah R. Geis

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Postmodern Theatric k s Monologue in Contemporary American Drama Theater Theory Text Performance

By Deborah R. Geis

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Considering Maus

By Deborah R. Geis

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Considering Maus

By Deborah R. Geis

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"In 1992, Art Spiegelman's two-volume illustrated novel Maus: A Survivor's Tale was awarded a special-category Pulitzer Prize. In it, Spiegelman tells the gripping story of his father's experiences...

Beat drama

By Mark Taylor Batty, Deborah R. Geis, Enoch Brater

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Beat drama

By Mark Taylor Batty, Enoch Brater, Deborah R. Geis

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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.