Marc Norman Books

What Happens Next: A History of American Screenwriting

By Marc Norman

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Shakespeare in Love

By Marc Norman, Tom Stoppard, Lee Hall

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The screenplay to the critically acclaimed film which New York Newsday called one of the funniest, most enchanting, most romantic, and best written tales ever spun from the vast legend of Shakespea...

Shakespeare in Love. A Screenplay. Lernmaterialien

By Tom Stoppard, Marc Norman, Barbara Puschmann Nalenz

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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.