Dan Callahan Books

Encyclopedia of Applied Ethics

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Vanessa

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Describes the life and career of the English stage, screen, and television actress and political activist from her early performances of Shakespeare to her Academy Award nomination for Howard's End.

Encyclopedia of Applied Ethics

By Dan Callahan, Peter Singer, Ruth Chadwick

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Encyclopedia of Applied Ethics

By Dan Callahan, Peter Singer, Ruth Chadwick

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The Art of American Screen Acting 1912 1960

By Dan Callahan

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Art of American Screen Acting 1960 to Today

By Dan Callahan

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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.